Document:

Exhibit 10.2

Exhibit
10.2

DEED OF LEASE

BETWEEN

TWO FREEDOM SQUARE, L.L.C.

(as Landlord)

AND

  THE TITAN CORPORATION 

(as Tenant)

TWO FREEDOM
SQUARE

11955 Freedom Drive

Reston, Virginia

 

TABLE OF
CONTENTS

ARTICLE I THE
PREMISES. 1

ARTICLE II TERM... 4

ARTICLE III BASE RENT.
5

ARTICLE IV ADDITIONAL RENT. 7

ARTICLE V SECURITY DEPOSIT. 17

ARTICLE VI USE OF PREMISES. 20

ARTICLE VII ASSIGNMENT AND SUBLETTING.. 23

ARTICLE VIII TENANT'S MAINTENANCE AND REPAIRS. 29

ARTICLE IX TENANT ALTERATIONS. 31

ARTICLE X SIGNS AND FURNISHINGS. 34

ARTICLE XI TENANT' S EQUIPMENT. 36

ARTICLE XII INSPECTION BY LANDLORD.. 36

ARTICLE XIII INSURANCE.
37

ARTICLE XIV SERVICES AND UTILITIES. 39

ARTICLE XV LIABILITY OF LANDLORD.. 42

ARTICLE XVI RULES AND REGULATIONS. 44

ARTICLE XVII DAMAGE OR DESTRUCTION.. 45

ARTICLE XVIII CONDEMNATION.. 46

ARTICLE XIX DEFAULT BY TENANT. 47

ARTICLE XX BANKRUPTCY..
51

ARTICLE XXI SUBORDINATION.. 53

ARTICLE XXII HOLDING OVER.. 55

ARTICLE XXIII COVENANTS OF LANDLORD.. 55

ARTICLE XXIV PARKING..
56

ARTICLE XXV GENERAL PROVISIONS. 57

ARTICLE XXVI RIGHT OF FIRST OFFER.. 61

ARTICLE XXVII ROOF RIGHTS. 63

ARTICLE XXVIII GENERATOR RIGHTS. 66

RIDER NO. 1
--          Renewal
Option

EXHIBIT A
--            
Site Plan (including location of the Generator Support
Area)

EXHIBIT A-1
--          Diagram of
Premises Located on Tenth Floor

EXHIBIT A-2
--          Diagram of
Premises Located on the Sixth Floor

EXHIBIT A-3
--          Diagram of
Premises Located on Fourth Floor

EXHIBIT A-4
--          Diagram of
Premises Located on Third Floor

EXHIBIT A-5
--          Diagram of
Premises Located on Second Floor

EXHIBIT A-6 --         
Diagram of Premises Located on the Retail Level

EXHIBIT A-7
--          Diagram of
Premises Located on the C-1 (Concourse) Level

EXHIBIT B
--             
Work Agreement

SCHEDULE
I  --         Building
Shell Items

SCHEDULE II
--         [INTENTIONALLY
OMITTED]

SCHEDULE III
--       Intentionally
Omitted

SCHEDULE IV
--       Rules and Procedures for
Contractors

SCHEDULE V
--        Insurance Requirements
for Tenant’s Contractor

SCHEDULE VI
--       Intentionally
Omitted

SCHEDULE VII
--      Close-Out Requirements

SCHEDULE
VIII --     Intentionally Omitted

SCHEDULE IX
--       Approved List of Contractors
– Tenant Buildout

 SCHEDULE X --        Standard
Design Concepts

EXHIBIT C --
           
Rules and Regulations

EXHIBIT D
--            
Form of Declaration of Lease Commencement Date

EXHIBIT E
--             
Acceptable Form of Letter of Credit

EXHIBIT F
--             
Char and Janitorial Specifications

EXHIBIT G
--            
HVAC Specifications

EXHIBIT H
--            
Intentionally Omitted

EXHIBIT I
--              
Wilson Sublease

EXHIBIT J
--              
Wilson Consent

EXHIBIT K
--            
Form of Consent to Sublease

TABLE OF DEFINED TERMS

24/7............................................................
16

6th Floor
Termination Date....................... 5

Abatement...................................................
6

ADA..........................................................
20

Additional
Space....................................... 61

Affiliate of
Tenant........................................ 27

Alterations................................................
31

Any
Auto......................................................
1

any component of the
Leasehold Plans........... 3

Approved
Period......................................... 9

as
built..........................................................
2

as
was.........................................................
37

backloading.................................................
49

Bankruptcy
Code...................................... 51

Base Building
Deliverables....................... 2

Base Building
Engineers............................ 2

Base Building Shell
Condition................... 8

Base Building
Work................................... 2

Base Operating
Expenses.......................... 7

base
rent.....................................................
5

Base
Rent...................................................
5

Base Rent
Allotment.................................. 7

Base
Year...................................................
7

BOMA........................................................
4

Boston Properties Limited
Partnership........... 2

Broker.........................................................
2

Building.......................................................
1

business
days............................................ 61

cabling.......................................................
42

Class
“A”......................................................
5

commissioned................................................
7

Communications
Equipment..................... 63

Communications
EquipmentDrawings.... 63

Complex......................................................
1

Complex Common
Expenses................... 14

connected.....................................................
1

Consent.......................................................
1

Control......................................................
27

Controls.....................................................
27

Credit..........................................................
1

days...........................................................
61

deemed
approved......................................... 8

Default
Rate............................................. 50

Delivery
Date............................................. 4

Design
Drawings........................................ 3

downtime....................................................
26

Effective
Date............................................. 1

Election
Period............................................ 1

Environmental
Default............................. 22

Environmental
Law................................... 22

Equipment or Receptable
Load...................... 1

Event of
Default....................................... 47

Excess water
usage.................................. 41

Expiration
Date.......................................... 4

Extra
Rent................................................
49

Finnegan................................................
4, 62

garage.......................................................
56

Generator..................................................
66

Generator
Alterations.............................. 67

Generator Support
Area.......................... 66

Guidelines for Managing
Construction Project Fire Protection
Impairment         
3

Hazardous
Materials................................ 21

improvements...........................................
31

Improvements
Allowance........................... 7

Insolvency
Laws....................................... 51

Insurance
Requirements.......................... 33

Invitee.......................................................
30

Invitees.......................................................
43

Land............................................................
1

Landlord......................................................
1

Landlord
Delay........................................... 8

Landlord’s
Authorized Representative..... 1

Landlord’s
Available Space Notice......... 61

Lease...........................................................
1

Lease
Term.................................................
4

Lease
Year..................................................
4

Leasehold
Architect................................... 2

Leasehold
Cost........................................... 6

Leasehold
Cost-Premises.......................... 6

Leasehold Cost-Wilson
Premises.............. 6

Leasehold
Engineers.................................. 2

Leasehold
Plans.......................................... 3

Leasehold
Work......................................... 2

Leasehold
Work-Premises......................... 2

Leasehold Work-Wilson
Premises............ 2

Legal
Requirements................................... 9

Letter of
Credit......................................... 17

Lighting.........................................................
1

Management
Fees.................................... 12

Market
Area............................................. 29

mortgage...................................................
53

most favored
nation..................................... 36

normal electrical
usage................................. 36

Occupancy....................................................
1

occurrence....................................................
1

Operating
Expenses................................... 7

Out of
Service............................................... 3

owner.........................................................
33

Parent of
Tenant.......................................... 27

Permitted
Occupant.................................. 28

Permitted
Transfer................................... 23

Power Source
Alterations......................... 67

Premises..................................................
2, 1

prime
rate....................................................
51

Real Estate
Taxes.................................... 13

Relocation
Allotment.................................. 7

renewal option
notice.................................. 1

Renewal
Term............................................ 1

Rent Commencement
Date........................ 6

Rentable Area of the
Building................... 1

Rentable Area of the
Premises.................. 1

Rooftop
Signage....................................... 35

SCIF
improvements...................................... 5

secure
areas.......................................... 16, 37

security
deposit......................................... 17

Security
Deposit....................................... 17

sham.....................................................
24, 27

short-term
extension option notice............ 3

Short-Term Extension
Period.................... 3

Short-Term Extension
Right...................... 3

SNDA........................................................
54

soft...............................................................
6

Space
Plans.................................................
3

Special Use
Areas...................................... 5

Sublease......................................................
1

Subtenant....................................................
1

Super
Fund................................................. 22

Super
Lien..................................................
22

Takeover
expenses...................................... 13

tap
fees.......................................................
11

Tenant.........................................................
1

Tenant Occupancy
Date............................. 4

Tenant's Authorized
Representative......... 1

Tenant's
Expenses..................................... 6

Three-Broker..............................................
2

Titan............................................................
1

Trustee......................................................
51

Two Freedom
Square......................... 1, 56, 1

Unfunded
Wilson Allowance...................... 7

Unified
Premises......................................... 1

Unused
Allowance...................................... 6

Wilson.....................................................
2, 1

Wilson
Consent........................................... 3

Wilson
Lease.......................................... 2, 1

Wilson Premises.........................................
1

Wilson
Sublease..................................... 2, 1

Wilson’s Authorized
Representative......... 1

Work
Agreement........................................ 1

DEED OF LEASE

TWO FREEDOM SQUARE

THIS DEED OF LEASE (the
"Lease") is made as of the 1sr day of April, 2003
(the "Effective Date"), by and between TWO FREEDOM
SQUARE, L.L.C. (hereinafter collectively referred to as
"Landlord") and THE TITAN CORPORATION, a Delaware
corporation (hereinafter referred to as "Tenant" or
“Titan”).

RECITALS:

A.       
Landlord is the developer and owner of an office building known as
"Two Freedom Square", located at 11955 Freedom Drive,
Reston, Virginia, situated on certain real property owned by
Landlord (all such real property is referred to herein as the
"Land").  Said office building consists of sixteen (16)
stories at and above grade and two (2) stories below grade totaling
approximately four hundred twenty-four thousand sixty-two (424,062)
total square feet (the “Rentable Area of the
Building”), parking structures adjacent to the Building
and other related improvements, as more specifically described in
the plans and drawings listed on Schedule II of
Exhibit B attached hereto.  Said office building is
referred to herein interchangeably as "Two Freedom Square"
or the "Building."  The Building is located within a
two (2) office building complex (the “Complex”)
within the Urban Core of Reston Town Center, as more particularly
shown on the site plan attached hereto as Exhibit A.

B.        
Tenant desires to lease space in the Building from Landlord, and
Landlord is willing to rent space in the Building to Tenant, upon
the terms, conditions, covenants and agreements set forth
herein.

NOW, THEREFORE, the
parties hereto, intending legally to be bound, hereby covenant and
agree as set forth below:

THE PREMISES

     
        Landlord hereby leases
to Tenant and Tenant hereby leases from Landlord, for the term and
upon the terms, conditions, covenants and agreements herein
provided, an agreed upon one hundred forty-five thousand nine
hundred ninety-five (145,995) square feet of rentable area
comprised of the square feet of rentable area per floor in the
Building set forth in Table 1.1 below (the
“Rentable Area of the Premises”):

	
FLOOR IN
THE BUILDING

	
SQUARE
FEET OF RENTABLE AREA

	
10th

	
27,348

	
6th

	
27,348

	
4th

	
29,036

	
3rd

	
29,111

	
2nd

	
22,192

	
Retail

	
2,301

	
C-1 (Concourse)

	
8,659

	
TOTAL

	
145,995

 

Table 1.1 – 
Square Feet of Rentable Area Per Floor in the Premises

The space which is the subject of this Lease is hereinafter
referred to as the "Premises."  The location and
configuration of the Premises are outlined on Exhibits A-1, A-2,
A-3, A-4, A-5, A-6 and A-7 attached hereto and made a
part hereof.

      Pursuant to a Deed of Lease
dated as of October 6, 2000, as amended by a First Amendment to
Deed of Lease dated as of February 16, 2001, a Second Amendment to
Deed of Lease dated as of April 5, 2001, a Third Amendment to Deed
of Lease dated as of December 13, 2002, and a Fourth Amendment to
Deed of Lease of even date herewith (collectively, the
“Wilson Lease”), Landlord has leased to
Wilson Sonsini Goodrich & Rosati (“Wilson”)
certain space in the Building, as more particularly described in
the Wilson Lease.  Tenant, as subtenant, and Wilson, as
sublandlord, have entered into a Sublease Agreement of even date
herewith (the “Wilson Sublease”, a copy of which
is attached to this Lease as Exhibit I) with respect to
Tenant’s sublease from Wilson of one hundred seven thousand
fifty (107,050) square feet of rentable area (the “Wilson
Premises”) comprised of the square feet of rentable area
per floor in the Building set forth in Table 1.2
below:  

	
FLOOR IN
THE BUILDING

	
SQUARE
FEET OF RENTABLE AREA

	
16th

	
19,662

	
15th

	
19,662

	
14th

	
20,057

	
13th

	
23,094

	
12th

	
22,711

	
C-1 (Concourse)

	
1,864

	
TOTAL

	
107,050

Table 1.2 – Square
Feet of Rentable Area Per Floor in the Wilson Premises

      Landlord has executed a Sublease
Consent of even date herewith with respect to the Wilson Sublease
(the “Wilson Consent”, a copy of which is
attached to this Lease as Exhibit J).  

      The Wilson Sublease is scheduled
to expire on July 31, 2014.  Unless the Wilson Sublease is
earlier terminated as a result of an Event of Default of Titan
under the Wilson Sublease, effective as of August 1, 2014, the
Wilson Premises shall, at Tenant’s option (which must be
exercised by written notice to Landlord not later than June 1,
2013), become a part of the Premises on all of the then-existing
terms and conditions of this Lease applicable to the balance of the
Premises, except as follows:  (i) Base Rent per square foot
payable with respect to the Wilson Premises shall be the
then-current base rent per square foot per annum as of July 31,
2014 for the Wilson Premises under the Wilson Sublease, subject to
increase on January 1, 2015 to an amount per annum equal to Three
Million Forty-Six Thousand Six Hundred Forty-Three Dollars
($3,046,643.00); and (ii) The Wilson Premises shall be added to the
Premises in its then current “as-is” condition and
Landlord shall have no obligations to perform any alterations or
improvements thereto.  At Landlord’s request, Tenant
shall execute a confirmation of the increased rentable square
footage of the Premises on the terms specified herein, however,
failure to execute such confirmation shall not affect the increase
in square footage on the terms specified in this Section.  If
Tenant fails timely to elect to add the Wilson Premises to the
Premises, then Landlord shall notify Tenant in writing that its
option with regard to the Wilson Premises will expire if Tenant
does not elect in writing to exercise its option within fifteen
(15) days from the date Tenant receives Landlord’s
notice.  If Tenant fails to elect to add the Wilson Premises
within such fifteen (15)-day period, then the Wilson Premises shall
not become a part of the Premises and Tenant shall have no further
rights with respect to the Wilson Premises until Tenant’s
rights to such space arise under Article XXVI.  If Wilson has
not elected to renew the Lease and Tenant holds over in the Wilson
Premises beyond the expiration of the term of the Wilson Sublease,
then the holdover provisions of Section 22.2 of this Lease shall
apply with respect to such holdover.

      The lease of the Premises
includes the right, together with other tenants of the Building and
members of the public, to use the common and public areas within
the Building, but includes no other rights not specifically set
forth herein.  The lease of the Premises also is subject to
any covenants, conditions and restrictions of record.  A copy
of Landlord’s current title policy has been delivered to
Tenant prior to the date hereof.  Landlord represents that,
since the date of said title policy, it has not recorded against
the Building or the Land any restrictions that materially adversely
affect use of the Premises for the purposes permitted by this Lease
(and Landlord agrees that it shall not do so during the Lease
Term).

      The square footage of the
Building, the Premises and the Wilson Premises has been determined
in accordance with the American National Standards Institute,
Inc./Building Owners and Managers Association standard method of
measuring floor area, ANSI/BOMA Z65.1-1996
(“BOMA”) dated 1996.  Landlord shall have
the right to remeasure the Premises, the Wilson Premises and/or the
Building during the Term pursuant to BOMA or any other method of
measurement; provided, however, Tenant’s rights and
obligations under this Lease  shall not change as a result of
any such remeasurement. 

TERM

      All of the provisions of this
Lease shall be in full force and effect from and after the
Effective Date.  The term of this Lease (hereinafter referred
to as the "Lease Term") shall be for the period commencing
on the Lease Commencement Date, as determined pursuant to
Section 2.2 hereof, and continuing until December 31, 2015
(the “Expiration Date”), unless such Lease Term
shall be terminated earlier in accordance with the provisions
hereof or extended for up to six (6) months or renewed in
accordance with Rider One to this Lease.    The term
"Lease Term" shall include any and all renewals and
extensions of the term of the Lease.

      The Lease Commencement Date
shall be date on which the Lease has been fully executed and
delivered by Tenant and Landlord.  Promptly after the Lease
Commencement Date, Landlord and Tenant shall execute a written
declaration in the form of the declaration attached as Exhibit
D hereto.

The “Tenant Occupancy Date” shall be January
1, 2004, which date may be extended in accordance with Section
3.1(b) below.  

      Landlord shall deliver the
Premises in Base Building Shell Condition (as defined in Exhibit
B) on the Effective Date (the “Delivery
Date”). 

      For purposes of this Lease, the
term "Lease Year" shall mean a period of twelve (12)
consecutive calendar months, commencing on the Rent Commencement
Date and each successive twelve (12) month period.

      Tenant
acknowledges that Finnegan Henderson Farabow Garrett and Dunner,
LLP (and certain of its successors) (collectively,
“Finnegan”) has the
right to expand into the entire sixth floor of the Building. 
Finnegan must notify Landlord of its election so to expand on or
before May 1, 2007.   In connection with Finnegan’s
expansion right, the following termination rights
apply:

      If Finnegan
elects to expand onto the sixth floor, then Landlord shall notify
Tenant thereof not later than July 1, 2007, and this Lease shall
terminate with respect to the sixth floor only on July 31, 2008
(the “6th Floor Termination Date”).   If Landlord terminates this Lease in
accordance with this Section 2.6(a), then the annual base
rent otherwise payable with respect to the sixth floor only for the
four (4)-month period immediately preceding the 6th Floor
Termination Date shall be abated.  If Tenant fails timely to
vacate the sixth floor in accordance with the surrender provisions
of this Lease, then the holdover provisions of this Lease shall
apply.

      In
addition, Tenant shall have the right, without fee or
penalty and without abatement of any kind, to terminate this Lease
with respect to the sixth floor only,
effective as of the 6th Floor Termination Date, subject to and in
accordance with the terms and conditions of this Section
2.6(b).  Tenant may exercise such right only by giving
Landlord written notice thereof not later than July 31, 2007. 
Notwithstanding anything to the contrary contained herein, in the
event that an Event of Default exists at the time Tenant delivers
the termination notice (or at any time thereafter prior to the 6th
Floor Termination Date), then, at Landlord's sole option,
Tenant’s termination notice may be deemed void and of no
further force or effect.  If Landlord elects to void Tenant's
termination notice in accordance with the immediately preceding
sentence, then this Lease shall continue in full force and
effect.  If Tenant does not timely exercise its right of
termination pursuant to this Section, then such right shall
immediately lapse and be of no further force or effect.

BASE RENT

     
        From and after the
Tenant Occupancy Date, Tenant shall pay to Landlord as annual base
rent (hereinafter, “base rent” or “Base
Rent”) for the Premises, without set off, deduction or
demand (except as otherwise specifically provided in Section
14.4 and Articles XVII and XVIII), the amount set forth
below for the applicable time period.  Each monthly
installment of Base Rent shall be due and payable in advance on the
first day of each month during such Lease Year.  Concurrently
with the signing of this Lease, Tenant shall pay to Landlord an
amount equal to one (1) monthly installment of Base Rent payable
during the first Lease Year without regard to the abatement
provided in Section 3.1(b) below, which sum shall be
credited by Landlord toward the first monthly installments of
annual base rent due under the Lease (including any partial
calendar month if the Rent Commencement Date is on other than the
first day of a month and taking into account any abatement of
annual base rent as set forth in Section 3.1(b) below) until
fully applied.  If the abatement of annual base rent as set
forth in Section 3.1(b) below does not apply and the Lease
Term begins on a date other than on the first day of a month, rent
from such date until the first day of the following month shall be
prorated on a per diem basis at the base rate payable during the
first Lease Year, and such prorated rent shall be payable in
advance on the Rent Commencement Date.

	
Period

	
Base
Rent per Rentable Square Foot

	
Monthly
Rent

	
Annual
Rent

	
1st Lease
Year

	
$26.00

	
$316,322.50

	
$3,795,870.00

	
2nd Lease
Year

	
$26.65

	
$324,230.56

	
$3,890,766.72

	
3rd Lease
Year

	
$27.32

	
$332,381.95

	
$3,988,583.40

	
4th Lease
Year

	
$28.00

	
$340,655.00

	
$4,087,860.00

	
5th Lease
Year

	
$28.70

	
$349,171.38

	
$4,190,056.56

	
6th Lease
Year

	
$29.42

	
$357,931.08

	
$4,295,172.96

	
7th Lease
Year

	
$30.16

	
$366,934.10

	
$4,403,209.20

	
8th Lease
Year

	
$30.91

	
$376,058.79

	
$4,512,705.48

	
9th Lease
Year

	
$31.68

	
$385,426.80

	
$4,625,121.60

	
10th Lease
Year

	
$32.47

	
$395,038.14

	
$4,740,457.68

	
11th Lease
Year

	
$33.28

	
$404,892.80

	
$4,858,713.60

	
1st day of the
12th Lease Year through December 31, 2015

	
$34.11

	
$414,990.79

	
__________

      Notwithstanding anything to the
contrary contained in this Article III and provided no Event of
Default has occurred under this Lease, Landlord hereby agrees to
grant Tenant an abatement of the annual base rent due and payable
under this Lease during the period commencing on the Tenant
Occupancy Date and ending on April 30, 2004 (the
“Abatement”).  From and after May 1, 2004
(the “Rent Commencement Date”), Tenant shall pay
the full amount of annual base rent due in accordance with the
provisions of this Article III; provided, however, if and to the
extent Tenant is actually delayed in completing the Leasehold Work
past the projected completion date therefor set forth on the
approved construction schedule as a result of Landlord Delay (as
defined in Exhibit B), then, as Tenant’s sole and exclusive
remedy therefor, (i)  the Tenant Occupancy Date and the Rent
Commencement Date shall be extended on a day for day basis , and
(ii) Landlord shall grant to Tenant a rent abatement equal to
one hundred percent (100%) of the per diem base rent payable under
the Wilson Sublease during the first Lease Year on a day for day
basis for each day of Landlord Delay.  Notwithstanding
anything herein to the contrary, there shall be no abatement or
extension of the Rent Commencement Date on account of Landlord
Delay to the extent that any portion of the Unified Premises (as
defined in the Work Agreement attached hereto as Exhibit B) is
occupied or could have been occupied for Tenant’s business
operations taking into account Tenant’s operational
requirements in transitioning into the Building. 
Notwithstanding anything to the contrary in this Section 3.1(b),
the rent escalation, as required by Section 3.2 below, shall be
based on the full and unabated amount of rent payable for the first
(1st) Lease Year as set forth in Section 3.1(a)
above.   

      [Intentionally Deleted.]

      All rent shall be paid to
Landlord in legal tender of the United States to 111 Huntington Avenue, Boston, Massachusetts 02199
or to such other address as Landlord may designate from time to
time by written notice to Tenant.  If Landlord shall at any
time accept rent after it shall become due and payable, such
acceptance shall not excuse a delay upon subsequent occasions, or
constitute or be construed as a waiver of any of Landlord's rights
hereunder.  If any sum payable by Tenant under this Lease is
paid by check which is returned due to insufficient funds, stop
payment order, or otherwise, then:  (a) such event shall be
treated as a failure to pay such sum when due; and (b) in addition
to all other rights and remedies of Landlord hereunder, Landlord
shall be entitled (i) to impose a returned check charge of Fifty
Dollars ($50.00) to cover Landlord's administrative expenses and
overhead for processing, and (ii) to require that all future
payments be remitted by wire transfer, money order, or cashier's or
certified check.

      Landlord and Tenant agree that
no rental or other payment for the use or occupancy of the Premises
is or shall be based in whole or in part on the net income or
profits derived by any person or entity from the Building or the
Premises.  Tenant further agrees that it will not enter into
any sublease, license, concession or other agreement for any use or
occupancy of the Premises which provides for a rental or other
payment for such use or occupancy based in whole or in part on the
net income or profits derived by any person or entity from the
Premises so leased, used or occupied.  Nothing in the
foregoing sentence, however, shall be construed as permitting or
constituting Landlord's approval of any sublease, license,
concession, or other use or occupancy agreement not otherwise
approved by Landlord in accordance with the provisions of
Article VII.

ADDITIONAL RENT

      Operating Expenses.

      Commencing on the first
anniversary of the Tenant Occupancy Date and continuing with each
calendar year thereafter during the Lease Term, Tenant shall pay
Landlord, as additional rent for the Premises, Tenant's
proportionate share of the amount by which actual operating
expenses incurred by Landlord in connection with the management,
operation and ownership of the Building, including the parking
areas ("Operating Expenses") during any calendar year
falling entirely or partly within the Lease Term exceed a base
amount (the “Base Operating Expenses”) equal to
the Operating Expenses incurred by Landlord in connection with the
management, operation and ownership of the Building during the
twelve month period (the "Base Year") commencing January 1,
2003 and ending December 31, 2003 (which Base Operating Expenses
shall be subject to gross up as set forth in Section 4.2
below).  For purposes of this Article IV, Tenant's
proportionate share of such increases in Operating Expenses shall
be that percentage which is equal to a fraction, the numerator of
which is the Rentable Area of the Premises and the denominator of
which is the Rentable Area (excluding storage areas) of the
Building; however, it is understood that the number comprising such
denominator is subject to change because of changes in the use or
configuration of space in the Building or the addition of space to
the Building or the deletion of space from the Building or in the
amount of space leased by retail or other tenants who pay by
separate meter for their electrical and/or janitorial, cleaning, or
other utilities or services so that Tenant actually pays its fair
share of Operating Expenses; provided, however, that any such
change in Rentable Area shall be determined in accordance with the
standard set forth in Section 1.3 of this Lease, and, in any
event, that the denominator with respect to Real Estate Taxes shall
be calculated based on the total number of square feet of rentable
area in the Building, including portions of the Building occupied
by retail tenants but exclusive of storage areas.  Space
leased by retail tenants is excluded from the denominator with
respect to rubbish removal and with respect to water, electricity
and janitorial service to their premises (and expenses for such
services to their premises are excluded from Operating Expenses),
but is included in the denominator with respect to common area
water, electricity, janitorial, and all other categories of
expenses included in Operating Expenses.  Tenant's
proportionate share shall increase or decrease in the event Tenant
expands or contracts the Premises during the Lease Term.

      The Operating Expenses shall be
consistent with those incurred in comparable first-class office
buildings located in the Market Area (as defined in Section
8.3) and shall be determined in accordance with generally
accepted accounting principles consistently applied from year to
year as such principles are generally applied in the real estate
industry, and shall include the costs and expenses described in
subsection (1) below, but shall not include the costs and
expenses described in subsection (2) below.

      Included costs and
expenses (which shall in all cases be net of any discounts,
credits, reimbursements (other than for Operating Expenses) and
rebates received by Landlord):

Gas, water, sewer, electricity and other utility charges
(including surcharges) of every type and nature.

Insurance premiums paid by Landlord for insurance relating to
the Building.

Personnel costs of the Building, including, but not limited to,
salaries, wages, fringe benefits and other direct and indirect
costs of engineers, superintendents, watchmen, porters and any
other personnel related to the management, maintenance, repair and
operation of the Building but excluding the costs of any
compensation paid to partners of Landlord or officers and directors
of the managing agent above the grade of superintendent or building
manager; provided, however, that if during the Lease Term such
personnel or entities are working on projects other than the
Building, then their wages, salaries, fees, and related expenses
shall be appropriately allocated among all of such projects and
only that portion of such expenses reasonably allocable to the
Building shall be included as an Operating Expense.

Costs of service and maintenance contracts, including, but not
limited to, chillers, boilers, controls, elevators, mail chute,
windows,  security service, landscaping, snow and ice removal
and management fees (subject to the limitations set forth in
Section 4.1(b)(2)).

Except to the extent specifically excluded by subsection
(2) below, all other maintenance and repair expenses and
supplies which are deducted by Landlord in computing its Federal
income tax liability.

Subject to the exclusions set forth in Section
4.1(b)(2)(xi), amortization over the Approved Period, with
interest at Landlord's cost of financing or, if the improvement is
not financed, at the prime rate reported in The Wall Street
Journal on the date of such expenditure) for capital
expenditures made by Landlord (A) to reduce operating expenses if
and to the extent that the annual reduction in operating expenses
will be equal to or exceed the annual amortization and financing
costs therefor or (B) to comply with applicable laws, rules,
regulations, requirements, statutes, ordinances, codes, by-laws and
court decisions of the jurisdiction in which the Building is
located or the federal government ("Legal Requirements")
which are first applicable to the Building after the Lease
Commencement Date; the “Approved Period” shall
mean the time period equal to the longest allowable useful life of
the improvement permitted under generally accepted accounting
principles, except that with respect to an improvement made for the
purpose of reducing Operating Expenses, Landlord may reduce such
time period to the number of years that it will take to fully
amortize the cost of the capital expenditure if the yearly
amortization amount (including interest as aforesaid) is equal to
the projected annual savings as reasonably estimated by
Landlord.

Any other costs and expenses reasonably incurred by Landlord in
maintaining or operating the Building including the fitness
facility and the garage; provided, however, that (x) any costs and
expenses that are reimbursed by users of the fitness facility shall
not be included in Operating Expenses, and (y) the costs and
expenses reasonably incurred by Landlord in maintaining or
operating the fitness facility shall be reduced proportionately
based on any revenues that Landlord receives for the use of the
fitness facility from other tenants of the Building (for example,
if Landlord receives separate fees for the standard use of the
fitness facility from a tenant that occupies ten percent (10%) of
the Building, Landlord shall include in Operating Expenses only
ninety percent (90%) of the costs and expenses of operating and
maintaining the fitness facility).

The costs of any additional services not provided to the
Building at the Lease Commencement Date but thereafter provided by
Landlord in the prudent management of the Building if comparable
services are being furnished (including Complex Common Expenses, as
defined below) at comparable first-class buildings in the Market
Area.

Charges for concierge, security, janitorial, char and cleaning
services and supplies.

Complex Common Expenses (as hereinafter defined), if any.

Capital expenditures due to breakage, casualty or normal wear
and tear to the extent the capital replacement cost is less than
the costs of repair then immediately required.

Real Estate Taxes (as hereinafter defined).

Notwithstanding anything set forth in subsection (2)
below, the Building's share of all costs, expenses, charges or
other assessments under any covenants, conditions, restrictions or
easements affecting the Land or from the Reston Town Center Joint
Committee or other authority or entity or any successor thereto,
including without limitation, the Urban Core assessment.

      Excluded costs and
expenses:

Principal or interest payments on, and any other charges paid
by Landlord in connection with, any mortgages, deeds of trust or
other financing encumbrances.

Rental payments (including percentage rent and any increases in
base rent) made under any ground lease, except to the extent such
rental payments represent payment of Real Estate Taxes (as
hereinafter defined) or the provision of goods and/or services
that, if provided by Landlord, would be includable in Operating
Expenses.

Leasing commissions payable by Landlord and advertising and
promotional expenditures associated with marketing vacant space in
the Building.

Deductions for depreciation for the Building, except to the
extent included in subsection (1) above.

Depreciation and amortization of capital improvements, except
to the extent included in subsection (1) above.

The costs of special services, tenant improvements and
concessions, repairs, maintenance items or utilities separately
chargeable to, or specifically provided for, individual tenants of
the Building, including, without limitation, the cost of preparing
any space in the Building for occupancy by any tenant and/or for
altering, renovating, repainting, decorating, planning and
designing spaces for any tenant in the Building in connection with
the renewal of its lease and/or costs of preparing or renovating
any vacant space for lease in the Building (including permit,
license and inspection fees).

Attorney's fees and disbursements, recording costs, mortgage
recording taxes, title insurance premiums, title closer's gratuity
and other similar costs, incurred in connection with any mortgage
financing or refinancing or execution, modification or extension of
any ground lease; loan prepayment penalties, premiums, fees or
charges.

Salaries and all other compensation (including fringe benefits
and other direct and indirect personnel costs) of partners,
officers and executives above the grade of superintendent or
building manager of Landlord or the managing agent.

The costs of repairs, replacements and alterations for which
and to the extent that Landlord is actually reimbursed therefor
from any source; it being understood that any rent payments or
other payments by tenants in the nature of additional rent as
provided in this Section 4.1 shall not be deemed sources of
reimbursement to Landlord for such costs.

Fees, costs and expenses incurred by Landlord in connection
with or relating to claims against or disputes with tenants of the
Building (including any such claims or disputes relating to the
fitness facility or the garage) or the negotiation of leases with
tenants or prospective tenants, including, without limitation,
legal fees and disbursements.

Capital expenditures due to breakage, casualty or normal wear
and tear, except to the extent includable pursuant to Section
4.1(b)(1)(xi).

Any costs and expenses incurred by Landlord in connection with
causing the common and public areas of the Building which are
within Landlord's sole and exclusive control to comply with
applicable Legal Requirements, except to the extent included in
1(vi) above.

Costs incurred by Landlord for the original construction and
development of the Building and the Complex, and for completion of
all proffers work.

Costs and expenses incurred by Landlord for services which are
duplicative of, or are normally included in, any management fees
paid by Landlord.

That portion of any Operating Expenses which is paid to any
entity affiliated with Landlord which is in excess of the amount
which would otherwise be paid at then-existing market rates to an
entity which is not affiliated with Landlord for the provision of
the same service.

Sums paid by Landlord for any indemnity, damages, fines, late
charges, penalties or interest for any late payment or to correct
violations of building codes or other laws, regulations or
ordinances applicable to the Building, except for expenditures for
repairs and maintenance or other items that would otherwise
reasonably constitute Operating Expenses and except as otherwise
provided in Subsection (1) above.

Costs attributable to any "tap fees" or one-time lump sum sewer
or water connection fees payable in connection with the initial
construction of the Building.

Costs and expenses incurred by Landlord in connection with
damage, casualty or condemnation of all or a portion of the
Building; provided, however, that with respect to the cost to
repair damage, Landlord may include in Operating Expenses
(1) the amount of a commercially reasonable deductible applied
to each such occurrence and (2) if Landlord determines, in its
reasonable judgment, that the effect of making a claim under
Landlord's insurance policy or policies would be to materially
increase, in the aggregate, the future cost of insurance premiums
and repair and maintenance expenses relating to the Building,
Landlord may include in Operating Expenses the cost to repair such
damage to the extent such cost does not exceed two hundred percent
(200%) of the deductible amount applicable under Landlord's
insurance policy or policies to such occurrence; provided, however,
that Landlord may only include such cost in Operating Expenses, if
Landlord actually makes such repair and does not submit an
insurance claim in connection therewith.

Rental for personal property leased to Landlord except for rent
for personal property leased to Landlord the purchase price for
which, if purchased, would be fully includable in Operating
Expenses in the year of purchase.

Any costs actually reimbursed under any service contracts or
under the warranty of any general contractor, subcontractor or
supplier and realized by Landlord.

Costs and expenses incurred by Landlord in curing, repairing or
replacing any portion of the Building made necessary as a result of
defects in design, workmanship or materials.

Costs and expenses attributable to management fees
(collectively, the “Management Fees”) payable by
Landlord during the applicable calendar year in excess of a
commercially reasonable charge therefor, which during the initial
Lease Term shall not exceed three percent (3%) of gross
revenues.

Attorney's fees and disbursements, brokerage commissions,
transfer taxes, recording costs and taxes, title insurance
premiums, title closer's fees and gratuities and other similar
costs incurred in connection with the sale or transfer of an
interest in Landlord or the Building.

Costs and expenses of administration and management of
partnership activities of Landlord.

General corporate overhead and administrative expenses of
Landlord or its managing agent that are unrelated to the operation,
management, or maintenance of the Building.

Costs incurred as a result of Landlord’s breach of its
obligations under this Lease.

Costs and expenses attributable to any testing, investigation,
management, maintenance, remediation, or removal of Hazardous
Materials other than any testing or monitoring customarily
conducted by owners of buildings comparable to the Building in the
ordinary course of operating and managing the same (except to the
extent any such testing or monitoring is required as a result of
Landlord’s failure to comply with its obligations under
Section 6.4 hereof).

The cost of acquiring (but not of maintaining) sculptures,
paintings, and other works of art.

Costs actually reimbursed by insurers or by governmental
authorities in eminent domain proceedings and realized by
Landlord.

Costs incurred for any items to the extent Landlord recovers
under a manufacturer’s, materialman’s, vendor’s
or contractor’s warranty.

Charitable or political contributions.

Costs (including costs, such as, but not limited to, attorneys
fees and disbursements, associated with any court judgment or
arbitration award obtained against Landlord) directly resulting
from the breach of any other lease or agreement by Landlord, the
negligence or willful misconduct of Landlord and its employees, or
the gross negligence or willful misconduct of Landlord’s
agents or contractors (including the costs of increased insurance
premiums as a result thereof).

  Compensation paid to clerks, attendants or other persons
in commercial concessions operated by Landlord or by the operator
thereof (i.e., newsstands).

  “Takeover expenses” (expenses of another
tenant or prospective tenant incurred by Landlord with respect to
space located in the Building or another building of any kind or
nature in connection with the leasing of space in the
Building).

Accounting and legal expenses, except if and to the extent that
the same are directly related to operating the Building.

Excess personnel costs due to any overlapping of staff during a
staff transition, other than the costs of staffing property
management positions in anticipation of impending turnover (but not
to exceed two (2) weeks of overlap annually).

      As used above, the term "Real
Estate Taxes" shall mean (i) all real estate taxes, including
general and special assessments, if any, which are imposed upon
Landlord or assessed against the Building or the Land upon which
the Building (and any parking areas or facilities benefiting the
Premises) is situated; (ii) any other present or future taxes or
governmental charges that are imposed upon Landlord or assessed
against the Building or the land upon which the Building is
situated, including, but not limited to, any tax levied on or
measured by the rents payable by tenants of the Building, which are
in the nature of, or in substitution for, real estate taxes; (iii)
all taxes which are imposed upon Landlord, and which are assessed
against the value of any improvements to the Premises made by
Tenant or any machinery, equipment, fixtures or other personal
property of Tenant used therein; and (iv) reasonable expenses
(including reasonable attorneys’ fees) incurred in reviewing,
protesting or seeking a reduction in Real Estate Taxes.  If
another building or buildings comprising the Complex (or parking
areas or facilities benefiting the Building) are assessed together
with the Building and/or the parking areas and facilities
benefiting the Building, then Real Estate Taxes for the Building
shall be a fraction thereof, the numerator of which is the number
of square feet of rentable area in the Building and the denominator
of which is the number of square feet of rentable area in buildings
in the Complex.  Real Estate Taxes shall not include (I) any
rental or other charges or fee imposed upon Landlord in connection
with the lease or use of any vault space or (II) any income taxes,
excess profits taxes, excise taxes, franchise taxes, estate taxes,
inheritance taxes, succession taxes, grantor’s taxes,
recordation taxes, and transfer taxes, except to the extent any of
such taxes are in the nature of or are in substitution for or
recharacterization or replacement of Real Estate Taxes.
  If Tenant believes that a real estate tax assessment
should be appealed, Tenant may so inform Landlord in writing, and
Landlord will in good faith take Tenant’s analysis into
consideration in making a final determination on whether to
commence an appeal.   Landlord shall make such
determination whether or not to challenge or appeal such assessment
based on Landlord’s reasonable judgment of which course is in
the best interest of the Building.  If Landlord contests the
Real Estate Taxes for any calendar year and such contest results in
an increase in Real Estate Taxes for such calendar year then,
Landlord shall have the right to bill Tenant for prior
underpayments of Operating Expenses thereby resulting.  If
Landlord receives a refund of any portion of the Real Estate Taxes
that were included in the Real Estate Taxes actually paid by Tenant
(i.e., above the line item for Real Estate Taxes included in
the Base Year), then Landlord shall reimburse Tenant its pro rata
share of the refunded taxes, less any expenses that Landlord
reasonably incurred to obtain the refund.  Landlord represents
that the Land and Building are assessed together on the assessment
rolls of Fairfax County, Virginia and are assessed and taxed
separately from any other property.  Landlord shall use
commercially reasonable efforts to ensure that the Land and the
Building are at all times assessed and taxed separately from any
other property.

      Throughout the Lease Term,
Landlord shall use reasonable efforts to keep Operating Expenses at
reasonable amounts while maintaining a first-class office
building.  If the Building is operated as a part of the
Complex, then Complex Common Expenses shall be included in
Operating Expenses.  As used above, the term "Complex
Common Expenses" shall mean those Operating Expenses incurred
by Landlord in owning, operating and/or managing the Complex (as
opposed to those Operating Expenses related exclusively to the
Building), but only a fraction of such expenses, the numerator of
which is the number of square feet of rentable area in the Building
and the denominator of which is the number of square feet of
rentable area in the Complex (or the portion of the Complex
benefiting from the applicable Operating Expense).

      In the event the average
occupancy rate for the entire Building shall be less than one
hundred percent (100%) or if any tenant is paying separately for
electricity or other utilities or services for any calendar year
(including the Base Year), then, for purposes of calculating the
additional rent payable by Tenant pursuant to this Article
IV for each calendar year, the portion of Operating Expenses
for the Base Year and such calendar year that fluctuate depending
on the level of occupancy of the Building (including, without
limitation, Real Estate Taxes) shall be increased by the amount of
additional costs and expenses that Landlord reasonably estimates
would have been incurred if the average occupancy rate for the
entire Building had been one hundred percent (100%) for the entire
Base Year and such calendar year, and with respect to Real Estate
Taxes, as if the first tax assessment had been based on a fully
occupied Building, and as if no tenants had separately paid for
electricity or other utilities and services for such calendar
year.  When making the foregoing calculation, Landlord shall
be governed by the following:

      It is the intent of this
provision to permit Landlord to recover from Tenant its
proportionate share of Operating Expenses attributable to occupied
space in the Building even though the aggregate of such expenses
shall have been reduced as a result of vacancies in the
Building.

      This Section 4.2 shall
not be construed to permit Landlord to recover from Tenant
additional rent pursuant to Article IV for any calendar year
which, when added to the total amount of additional rent payable
(whether actually paid, payable but unpaid, or that would have been
payable except that it has been abated in accordance with the terms
of the applicable tenant’s lease) by all tenants of the
Building on account of Operating Expenses for such year, will
exceed the actual amount of Operating Expenses incurred by Landlord
for such year.

      On or about the first
anniversary of the Tenant Occupancy Date and at the beginning of
each calendar year thereafter during the Lease Term, Landlord shall
submit to Tenant a statement setting forth in reasonable detail
Landlord's reasonable estimate of (a) the amount by which the
Operating Expenses that are expected to be incurred during such
calendar year will exceed the Base Operating Expenses, and (b) the
computation of Tenant's proportionate share of such anticipated
increases.  Except as otherwise provided herein, Tenant shall
pay to Landlord on the first day of each month following receipt of
such statement during such calendar year an amount equal to
one-twelfth (1/12th) of Tenant's proportionate share of the
anticipated increase in such expenses and taxes.  Within
approximately ninety (90) days after the expiration of each
calendar year falling entirely or partly within the Lease Term,
Landlord shall submit to Tenant a statement showing in reasonable
detail (i) the actual amount of Base Operating Expenses, (ii) the
actual Operating Expenses and Real Estate Taxes paid or incurred by
Landlord during the immediately preceding calendar year, (iii) a
computation of Tenant's proportionate share of the amount by which
the Operating Expenses actually incurred during the preceding
calendar year exceeded the Base Operating Expenses, and (iv) 
the aggregate amount of the estimated payments made by Tenant on
account thereof.  If the aggregate amount of such estimated
payments exceeds Tenant's actual liability for such increases, then
Landlord shall credit such excess against the monthly
installment(s) of annual base rent next coming due until such
credit has been fully applied, or, in the case
of the reconciliation for the calendar year in which the Lease Term
expires, Landlord shall pay Tenant the net overpayment (after
deducting therefrom any amounts then due from Tenant to Landlord)
within thirty (30) days following the determination of the amount
of the excess.  If Tenant's actual liability for such
increases exceeds the estimated payments made by Tenant on account
thereof, then, within twenty (20) days after delivery of such
statement, Tenant shall promptly pay to Landlord the total amount
of such deficiency as additional rent due hereunder.

      In the event the Lease Term
commences or expires or terminates on a day other than the first
and last day of a calendar year, respectively, the increases in the
Operating Expenses for such calendar year shall be apportioned by
multiplying the amount of Tenant's proportionate share thereof for
the full calendar year by a fraction, the numerator of which is the
number of days during such calendar year falling within the Lease
Term, and the denominator of which is 365.

      All payments required to be made
by Tenant pursuant to this Article IV shall be paid to
Landlord, without setoff or deduction (except as otherwise
specifically provided in Sections 14.4 and Articles XVII
and XVIII), in the same manner as annual base rent is payable
pursuant to Article III hereof.

      Tenant's liability for its
proportionate share of the increases in Operating Expenses
described in Section 4.1 hereof for the last calendar year
falling entirely or partly within the Lease Term shall survive the
expiration of the Lease Term.  Similarly, Landlord's
obligation to refund to Tenant the excess, if any, of the amount of
Tenant's estimated payments on account of such increases for such
last calendar year over Tenant's actual liability therefor shall
survive the expiration of the Lease Term.

      In the event that Tenant, in
good faith, believes that the amounts paid by Tenant to Landlord
relating to increases in Operating Expenses during any calendar
year falling within the Lease Term exceeded the amounts to which
Landlord was entitled to hereunder and Tenant generally describes
the alleged discrepancy in writing to Landlord, then, a regular
employee of Tenant or an independent, certified public accountant
designated by Tenant (who is (a) hired by Tenant on a
non-contingency basis and provides a full range of accounting
services or (b) one of the nationally recognized full-service
accounting firms (or one of their successors) that is hired by
Tenant on a contingency or non-contingency basis) shall have the
right, during regular business hours and after giving ten (10)
business days' advance written notice to Landlord, to inspect and
complete an audit of Landlord's books and records relating to
Operating Expenses for a period of one (1) year following the
receipt by Tenant of the statement required of Landlord pursuant to
Section 4.3 hereof for such calendar year.  If such
audit shows that the amounts paid by Tenant to Landlord on account
of increases in such charges exceeded the amounts to which Landlord
was entitled hereunder, or that Tenant is entitled to a credit with
respect to any such charges, then (x) after at least ten (10) days
prior written notice to Landlord, for a period of sixty (60) days
following the completion of Tenant's audit Tenant may also examine
in such manner Landlord’s books and records for the previous
two (2) calendar years with respect solely to line items for which
a discrepancy was found (and comparable and related items), and (y)
Landlord shall refund to Tenant the amount of such excess or the
amount of such credit, as the case may be within twenty (20) days
after the date it is determined that a refund is due, which sum
shall bear interest at the Default Rate from the date of
Landlord’s reconciliation statement for the year in which the
overpayments occurred to the date paid.  Similarly, if it is
determined that the amounts paid by Tenant to Landlord on account
of Operating Expenses were less than the amounts to which Landlord
was entitled hereunder, then Tenant shall pay to Landlord, as
additional rent hereunder, the amount of such deficiency within
twenty (20) days after it is determined that such a deficiency
exists, which sum shall bear interest at the Default Rate from the
date of Landlord’s reconciliation statement for the year in
which the deficiency arose to the date paid.  Tenant shall
(and shall cause its agents to) keep the results of such audit
strictly confidential.  All Tenant’s costs and expenses
of any such audit shall be paid by Tenant, except that if such
audit shows that Operating Expenses for any such calendar year were
overstated by Landlord by more than three percent (3%), Landlord
shall reimburse Tenant for the reasonable out-of-pocket costs and
expenses and fees incurred by Tenant in such audit, including any
contingency fees (to the extent allowable pursuant to Section
4.7); provided, however, that in no event shall Landlord be
obligated to reimburse Tenant for such audit costs in an amount in
excess of the overstatement of Tenant’s proportionate share
of Operating Expenses plus any interest that may be payable
pursuant to this Section 4.7.  If Tenant does not
notify Landlord in writing of any objection to any statement within
said two (2) year and sixty (60) day period, or elect to audit the
expenses of prior years within the sixty (60) day period set forth
above, then Tenant shall be deemed to have waived such
objection.

      If required by Landlord in
connection with its approval of the Leasehold Work, or if elected
by Tenant, electricity to the Premises shall be separately
submetered or checkmetered, in which event Landlord shall, subject
to any condition or limitations imposed by the electricity
provider, install a submeter or checkmeter at Tenant’s
expense.  Notwithstanding any of the foregoing to the
contrary, Landlord may require submetering or checkmetering of
electricity for:  (i)  Tenant’s proposed cafeteria,
(ii) Tenant’s proposed data center, (iii) Tenant’s
proposed Generator and Generator Support Area, (iv) Tenant’s
proposed Communication Equipment, (v) Tenant’s proposed
“secure areas”, (vi) Tenant’s proposed
supplemental HVAC units, (vii) any other “24/7”
electric operations, and (vii) electrical usage by Tenant that
exceeds Tenant’s pro rata share of the electrical capacity of
the Building described in Exhibit B – Schedule
I attached hereto; provided that, no other tenant of the
Building shall be permitted to exceed its pro rata share of the
electrical capacity of the Building without submetering or
checkmetering, nor shall any other tenant otherwise be granted more
favorable rights with respect to paying for its share of electrical
consumption, unless Tenant is afforded comparable such
rights.  Following any such submetering or checkmetering,
Tenant shall timely pay directly to the appropriate utility all
charges for electricity furnished to the Premises (and the charges
for such submetered or checkmetered electricity shall not be
included in Operating Expenses; provided that, if Tenant’s
entire Premises are submetered or checkmetered, then neither the
charges for such submetered or checkmetered electricity, nor the
charges for electricity furnished to other tenants’ premises,
shall be included in Operating Expenses).  Notwithstanding
anything contained herein to the contrary, if Tenant fails to pay
any electric bill that is provided directly to Tenant by the
electric utility as and when due, such failure shall constitute a
default hereunder.  If any such default is not cured within
ten (10) business days following written notice from Landlord, then
Landlord shall have the right, but shall not be obligated, to pay
the delinquent amounts, and Tenant shall reimburse Landlord
therefor within five (5) business days after receiving notice of
such payment by Landlord; provided that, Landlord may act without
notice to Tenant if delay would cause an interruption of utility
services, an emergency or similar situation.  Notwithstanding
anything to the contrary herein, if electric service to the
Premises is measured by submeter or checkmeter, then Tenant shall
not be relieved of its obligation to pay its proportionate share of
Operating Expenses attributable to the provision of electrical
service to the common areas of the Building pursuant to this
Article IV.

SECURITY DEPOSIT

     
        Not later than ten (10)
business days following Tenant’s execution of this Lease,
Tenant shall post an amount equal to Nine Hundred Forty-Eight
Thousand Nine Hundred Sixty-Seven and 50/100 Dollars ($948,967.50)
as a security deposit (hereinafter referred to as the "security
deposit" or “Security Deposit”), which sum
shall be in the form of an unconditional, irrevocable letter of
credit meeting the requirements of this Article V at all
times (the “Letter of Credit”) and shall be in
addition to the amount paid by Tenant to Landlord pursuant to
Section 3.1 hereof.  Any cash that Landlord may hold as
a security deposit, including the proceeds if Landlord draws on the
Letter of Credit (as defined below), will be deposited into an
interest-bearing account maintained by Landlord (which account may
also contain the security deposits of other tenants or other
sums).  Any cash portion of the Security Deposit held by
Landlord shall accrue interest at a standard passbook savings rate
of interest, as reasonably determined by Landlord, and any such
interest shall be deemed to be a part of the Security
Deposit.  Among other things, Landlord has assigned (or
intends to assign) to the holder of the mortgage now or hereafter
encumbering the Building, all of Landlord's interest in this Lease,
including, without limitation, the Security
Deposit.        

      The Security Deposit shall be
security for the performance by Tenant of all of Tenant's
obligations, covenants, conditions and agreements under this
Lease.  Within sixty (60) days after the expiration of the
Lease Term, and provided Tenant has vacated the Premises and is not
in default hereunder, Landlord shall return the
Security Deposit to Tenant, less only such portion thereof as
Landlord shall have reasonably and properly appropriated to satisfy
any Event of Default by Tenant hereunder.  If any portion of
the Security Deposit is so appropriated and withheld from the
amounts to be returned to Tenant, and Tenant disputes same, then
Landlord shall retain the Security Deposit until the dispute has
been resolved.  In the event of any Event of Default by Tenant
hereunder, Landlord shall have the right, but shall not be
obligated, to draw upon the Letter of Credit and use, apply or
retain only such portion of the Security Deposit for (i) the
payment of any annual base rent or additional rent or any other sum
as to which such Event of Default relates, (ii) the payment of any
amount which Landlord may spend or become obligated to spend to
repair physical damage to the Premises or the Building pursuant to
Section 8.2 hereof, or (iii) the payment of any amount
Landlord may spend or become obligated to spend, or for the
compensation of Landlord for any losses incurred, by reason of such
Event of Default hereunder, including, but not limited to, any
damage or deficiency arising in connection with the reletting of
the Premises; provided that, in the case of the applicable of the
Security Deposit to payments of the type described in clauses (ii)
or (iii) above, if Tenant has in good faith disputed such
application of funds, then Landlord may not apply such sums until
its entitlement thereto has been determined by a court of competent
jurisdiction.  If any portion of the Letter of Credit is drawn
upon and is so used or applied, within three (3) business days
after written notice to Tenant of such use or application, Tenant
shall restore the Security Deposit by providing either a replacement Letter of Credit or an amendment
to the Letter of Credit then held by Landlord such that Landlord is holding one Letter of Credit in the
aggregate amount of the Security Deposit required hereunder, and
Tenant's failure to do so shall constitute a default under this
Lease.  Tenant hereby authorizes Landlord to deposit the
Security Deposit with the holder of any mortgage (as defined in
Section 21.1) if and to the extent required by said holder;
provided, however, that such holder shall hold the Security Deposit
subject to Tenant's rights with respect to the Security Deposit set
forth herein.

      Each Letter of Credit delivered
to Landlord pursuant to this Article V shall be (i) substantially
in the form set forth in Exhibit E attached hereto, or
otherwise in form and substance satisfactory to Landlord in its
reasonable discretion; (ii) in the amount of the Security Deposit
then required hereunder, and shall permit multiple draws; (iii)
issued by Comerica Bank or such other commercial bank reasonably
acceptable to Landlord from time to time and located in the
Washington, D.C. metropolitan area; (iv) made payable to, and
expressly transferable and assignable by, the owner from time to
time of the Building or, at Landlord's option, the holder of any
mortgage (which transfer/assignment shall be conditioned only upon
the execution of a written document in connection therewith and
payment by Tenant to the issuing bank of a reasonable transfer
fee  of up to $500.00); provided, however, that Landlord shall
have the right, in its sole discretion, to require that any such
transfer be effected by delivery to Landlord of either a
replacement Letter of Credit or an amendment to the Letter of
Credit then held by Landlord with respect to this Lease; (v)
payable at sight upon presentment to a local branch of the issuer
of a simple sight draft, including a statement that Landlord is
entitled to draw upon the Letter of Credit pursuant to the terms of
this Article V and stating the amount that Landlord is entitled to
draw in connection therewith; (vi) of a term not less than one
year; and (vii) at least thirty (30) days prior to the
then-current expiration date of such Letter of Credit, either (1)
renewed (or automatically and unconditionally extended) from time
to time through the sixtieth (60th) day after the
expiration of the Lease Term, or (2) replaced with cash in the
amount of the Security Deposit.  Except as otherwise provided
in the portions of this Section 5.1(c) that follow this
sentence, Landlord agrees to give Tenant five (5) business
days’ notice prior to exercising Landlord’s right to
draw upon any Letter of Credit, which notice may be included in the
default notice given to Tenant, if any, associated with the Event
of Default giving rise to the draw.  Notwithstanding anything
in this Lease to the contrary, any cure or grace periods set forth
in this Lease shall not apply to any of the foregoing provisions of
Section 5.1(c), and, specifically, if Tenant fails to timely
comply with the requirements of subsection (vii) above, then
Landlord shall have the right to immediately draw upon the Letter
of Credit without notice to Tenant and apply the proceeds to the
security deposit.  Each Letter of Credit shall be issued by a
commercial bank that has a credit rating with respect to
certificates of deposit, short term deposits or commercial paper of
at least P-2 (or equivalent) by Moody's Investor Service, Inc., or
at least A-2 (or equivalent) by Standard & Poor's
Corporation, and shall be otherwise acceptable to Landlord in its
reasonable discretion.  If the issuer's credit rating is
reduced below P-2 (or equivalent) by Moody's Investors Service,
Inc. or below A-2 (or equivalent) by Standard & Poor's
Corporation, or if the financial condition of such issuer changes
in any other materially adverse way, then Landlord shall have the
right to require that Tenant obtain from a different issuer a
substitute Letter of Credit that complies in all respects with the
requirements of this Section, and Tenant's failure to obtain such
substitute letter of credit within ten (10) business days following
Landlord's written demand therefor (with no other notice or cure or
grace period being applicable thereto, notwithstanding anything in
this Lease to the contrary) shall entitle Landlord to immediately
draw upon the then existing Letter of Credit in whole or in part,
without notice to Tenant.  In the event the issuer of any
Letter of Credit held by Landlord is placed into receivership or
conservatorship by the Federal Deposit Insurance Corporation or any
successor or similar entity, then, effective as of the date such
receivership or conservatorship occurs, said Letter of Credit shall
be deemed to not meet the requirements of this Section, and, within
ten (10) business days thereof, Tenant shall replace such
Letter of Credit with other collateral acceptable to Landlord in
its reasonable discretion (and Tenant's failure to do so shall,
notwithstanding anything in this Lease to the contrary, constitute
an Event of Default for which there shall be no notice or grace or
cure periods being applicable thereto other than the aforesaid ten
(10) business day period).  Any failure or refusal of the
issuer to honor the letter of credit shall be at Tenant's sole risk
and shall not relieve Tenant of its obligations hereunder with
respect to the security deposit.

      Provided that no monetary
default or any material, non-monetary Event of Default (as defined
in Section 19.1) shall then be in existence hereunder, then
on the third (3rd) anniversary of the Rent Commencement
Date, Tenant shall have the right to reduce the Security Deposit by
Two Hundred Fifty-Seven Thousand Sixty-Eight and 50/100 Dollars
($257,068.50), subject to the procedures set forth in this
Section 5.1(d). 

         If all of the
aforesaid conditions are met on the third (3rd)
anniversary of the Rent Commencement Date, upon Tenant’s
request, Landlord shall promptly notify the issuer of the Letter of
Credit that the Letter of Credit may be reduced and the amount of
the reduction so authorized, and the Security Deposit shall be so
reduced in accordance with this Section 5.1(d); provided,
however, that in no event shall the Security Deposit be reduced
except as provided above.  The reduction in the Security
Deposit shall occur by means of delivery by Tenant to Landlord of
an amendment to the Letter of Credit reducing the amount thereof as
directed by Landlord, or a substitute Letter of Credit in such
amount and in strict conformity with the terms of this Article
V, in which latter event, the original Letter of Credit will be
promptly returned to Tenant.  Substitutions of the Letter of
Credit shall be made in a manner such that at all times one of the
Letters of Credit (but not both) is in full force and effect and
may be drawn upon (as permitted hereby).  In no event shall
the amount of the Letter of Credit be reduced unless the issuing
bank receives prior written notice from Landlord authorizing a
reduction by a certain amount (it being understood that in no event
shall the reduction exceed the amount so authorized by
Landlord).  Notwithstanding anything in this Article to the
contrary, if three (3) or more monetary Events of Default or five
(5) of more material non-monetary Events of Default have occurred
(whether or not the same are later cured), then there shall occur
no reduction in the Security Deposit. 

      In the event of the sale or
transfer of Landlord's interest in the Building, Landlord shall
have the right to transfer the Security Deposit to the purchaser or
assignee.  If Landlord transfers the Security Deposit to a
purchaser or assignee who expressly assumes liability therefor,
Tenant shall look only to such purchaser or assignee for the return
of the Security Deposit, and Landlord shall thereupon be released
from all liability to Tenant for the return of the Security
Deposit.  If the Security Deposit is in the form of a letter
of credit, then Tenant shall, within ten (10) business days after
Landlord's request therefor, have the Letter of Credit amended or
reissued by the issuer to indicate the new beneficiary.

      Tenant hereby acknowledges that
Tenant will not look to the holder of any mortgage (as defined in
Section 21.1) encumbering the Building for return of the
Security Deposit if such holder, or its successors or assigns,
shall succeed to the ownership of the Building, whether by
foreclosure or deed in lieu thereof, except if and to the extent
the security deposit is actually transferred to such holder.

USE OF PREMISES

     
        Tenant shall use and
occupy the Premises solely for general office use, including
ancillary uses thereto that are consistent with the character of
the Building and Legal Requirements, which uses may include,
without limitation, data center, operation of a Sensitive
Compartmented Information Facility, training, employee/building
invitee cafeteria/in-house food service, operations center, coffee
and vending uses, light assembly for modification and testing of
computers and related equipment, exercise facility and conference
center, and for no other use or purpose.  Tenant shall not use
or occupy the Premises for any unlawful purpose or in any manner
that will constitute waste, nuisance or unreasonable annoyance to
the Landlord or other tenants of the Building.  Tenant shall
comply with all Legal Requirements) concerning the use, occupancy
or condition of the Premises and all machinery, equipment and
furnishings therein, including, but not limited to the Americans
with Disabilities Act and regulations promulgated from time to time
thereunder (the “ADA”).  If any such Legal
Requirement requires an occupancy or use permit or license for the
Premises and the operation of the business conducted therein, then
Tenant shall obtain and keep current such permit or license at
Tenant's expense and shall promptly deliver a copy thereof to
Landlord; provided, however, that if Landlord is performing the
Leasehold Work, then Landlord shall be responsible for obtaining
the initial  non-residential use permit for the Premises at
Tenant's expense (subject to application of the Improvements
Allowance (as hereinafter defined)).  It is expressly
understood that if any change in the use of the Premises by Tenant,
or any alterations to the Premises by Tenant, or any future law,
ordinance, regulation or order requires a new or additional permit
from, or approval by, any governmental agency having jurisdiction
over the Building, such permit or approval shall be obtained by
Tenant on its behalf and at its sole expense.  Further, Tenant
shall comply with all Legal Requirements which shall impose a duty
on Landlord or Tenant relating to or as a result of the use or
occupancy of the Premises.  Tenant shall pay all fines,
penalties and damages that may arise out of or be imposed on
Landlord or Tenant because of Tenant's failure to comply with the
provisions of this Lease.

      Subject to Tenant's obligations
under Article IV of this Lease, Landlord shall comply with
all Legal Requirements that are applicable to the structural
components of the Building (including such components located
within the Premises) or the operation of the common and public
areas in the Building  (except that Landlord’s
obligation to comply with the ADA, shall apply only with respect to
the common and public areas of the Building that are within
Landlord's sole and exclusive control), to the machinery and
equipment provided by Landlord in the operation of the Building,
and to the Base Building systems, including, but not limited to,
Base Building restrooms on each floor of the Premises, whether
inside or not inside Tenant’s Premises or accessible from
public corridors, and to the exterior of the Building (including
the roof).  Notwithstanding anything to the contrary in this
Section 6.1, all additions, replacements or alterations to
the Building (other than the Premises) which are required due to
the enactment of any Legal Requirements after the date on which
this Lease is fully executed shall be performed by Landlord and the
cost thereof shall be an Operating Expense (if and to the extent
permitted in accordance with Article IV of this Lease)
unless such addition, replacement or alteration is necessitated by
Tenant's particular use, design or layout of the Premises or caused
by the acts or omissions of Tenant or any of its employees, agents,
contractors or subtenants, in which case Tenant shall bear the
entire cost of performing such addition, replacement or
alteration.

      Tenant shall pay any business,
rent or other taxes that are now or hereafter levied upon Tenant's
use or occupancy of the Premises, the conduct of Tenant's business
at the Premises, or Tenant's equipment, fixtures or personal
property.  In the event that any such taxes are enacted,
changed or altered so that any of such taxes are levied against
Landlord or the mode of collection of such taxes is changed so that
Landlord is responsible for collection or payment of such taxes,
Tenant shall pay any and all such taxes to Landlord upon written
demand from Landlord.

Tenant shall not cause or knowingly permit any Hazardous
Materials to be generated, used, released, stored or disposed of in
or about the Building by Tenant or its Invitees (as defined in
Section 8.3), provided that Tenant may use and store
reasonable quantities of standard office supplies and standard
cleaning materials as may be reasonably necessary for Tenant to
conduct normal general office use operations in the Premises. 
At the expiration or earlier termination of this Lease, Tenant
shall surrender the Premises to Landlord free of Hazardous
Materials (except to the extent that such Hazardous Materials were
brought into the Premises by Landlord, its employees, contractors
and agents) and in compliance with all Environmental Laws (it being
agreed that Tenant shall not be obligated to cure any noncompliance
that was not caused by Tenant or its Invitees).  "Hazardous
Materials" means (a) asbestos and any asbestos containing
material and any substance that is then defined or listed in, or
otherwise classified pursuant to, any Environmental Law or any
other applicable Law as a "hazardous substance," "hazardous
material," "hazardous waste," "infectious waste," "toxic
substance," "toxic pollutant" or any other formulation intended to
define, list, or classify substances by reason of deleterious
properties such as ignitability, corrosivity, reactivity,
carcinogenicity, toxicity, reproductive toxicity, or Toxicity
Characteristic Leaching Procedure (TCLP) toxicity, (b) any
petroleum and drilling fluids, produced waters, and other wastes
associated with the exploration, development or production of crude
oil, natural gas, or geothermal resources, and (c) any
petroleum product, polychlorinated biphenyls, urea formaldehyde,
radon gas, radioactive material (including any source, special
nuclear, or byproduct material), medical waste, chlorofluorocarbon,
lead or lead-based product, and any other substance whose presence
could be detrimental to the Building or the Land or hazardous to
health or the environment.  "Environmental Law" means
any present and future Law and any amendments (whether common law,
statute, rule, order, regulation or otherwise), permits and other
requirements or guidelines of governmental authorities applicable
to the Building or the Land and relating to the environment and
environmental conditions or to any Hazardous Material (including,
without limitation, CERCLA, 42 U.S.C. § 9601 et seq., the
Resource Conservation and Recovery Act of 1976, 42 U.S.C.
§ 6901 et seq., the Hazardous Materials Transportation
Act, 49 U.S.C. § 1801 et seq., the Federal Water
Pollution Control Act, 33 U.S.C. § 1251 et seq., the
Clean Air Act, 33 U.S.C. § 7401 et seq., the Toxic
Substances Control Act, 15 U.S.C. § 2601 et seq., the
Safe Drinking Water Act, 42 U.S.C. § 300f et seq., the
Emergency Planning and Community Right-To-Know Act, 42 U.S.C.
§ 1101 et seq., the Occupational Safety and Health Act,
29 U.S.C. § 651 et seq., and any so-called "Super Fund"
or "Super Lien" law, any Law requiring the filing of reports and
notices relating to hazardous substances, environmental laws
administered by the Environmental Protection Agency, and any
similar state and local Laws, all amendments thereto and all
regulations, orders, decisions, and decrees now or hereafter
promulgated thereunder concerning the environment, industrial
hygiene or public health or safety).  Tenant shall give
Landlord immediate verbal and follow-up written notice of any
actual or threatened Environmental Default, which Environmental
Default Tenant shall cure in accordance with all Environmental Laws
and to the satisfaction of Landlord and only after Tenant has
obtained Landlord's prior written consent, which shall not be
unreasonably withheld, conditioned or delayed.  An
"Environmental Default" means any of the following by Tenant
or any of Tenant’s Invitees:  a violation of an
Environmental Law; a release, spill or discharge of a Hazardous
Material on or from the Premises, the Land or the Building; an
environmental condition requiring responsive action; or an
emergency environmental condition.  Upon any Environmental
Default, in addition to all other rights available to Landlord
under this Lease, at law or in equity, Landlord shall have the
right but not the obligation to immediately enter the Premises, to
supervise and approve any actions taken by Tenant to address the
Environmental Default, and, if Tenant fails to immediately address
same to Landlord's satisfaction, to perform, at Tenant's sole cost
and expense, any lawful action necessary to address same.  If
any lender or governmental agency shall require testing to
ascertain whether an Environmental Default is pending or
threatened, then Tenant shall pay the reasonable costs therefor as
additional rent.  Promptly upon request, Tenant shall execute
from time to time affidavits, representations and similar documents
concerning Tenant's knowledge and belief regarding the presence of
Hazardous Materials at or in the Premises.

      Landlord shall not knowingly
permit the use of any Hazardous Materials in
violation of any Environmental Law in the construction or
development of the Property.  In the event
Landlord is advised, or it shall come to Landlord's attention, that
Hazardous Materials exist in the Property (i.e., in the
Building or in, on, or about the Land), if mandated by any Legal
Requirement, Landlord shall take all reasonable steps necessary to
promptly remove, at Landlord's expense, all such Hazardous
Materials, and in doing so, Landlord shall use its reasonable
efforts not to materially interfere with the conduct of Tenant's
business; provided, however, that Landlord shall remove any
Hazardous Materials from the Premises which Tenant, its employees,
agents, subcontractors or subtenants shall have introduced or
otherwise brought in, on or about the Premises at Tenant's
expense.  Notwithstanding anything herein to the contrary, no
holder of any mortgage (nor any person or entity claiming by,
through or under any such holder) shall have any liability under
this Section 6.4 or any responsibility to perform any of
Landlord's obligations set forth in this Section
6.4.

ASSIGNMENT AND SUBLETTING

     
        Tenant shall not have
the right to assign, transfer, mortgage or otherwise encumber this
Lease or its interest herein without first obtaining the prior
written consent of Landlord, which consent may be granted or
withheld by Landlord in its sole discretion (except as otherwise
provided in this Article).  No assignment or transfer of this
Lease or the right of occupancy hereunder may be effectuated by
operation of law or otherwise without the prior written consent of
Landlord, which consent may be granted or withheld by Landlord in
its sole discretion (except as otherwise provided in this
Article).  If Tenant is a partnership or a limited liability
company, a withdrawal or change, whether voluntary, involuntary or
by operation of law, of partners or members owning, individually or
collectively, a controlling interest in Tenant (occurring in one
transaction or in a series of related transactions) shall be deemed
a voluntary assignment of this Lease and shall be subject to the
foregoing provisions.  If Tenant is a corporation, any
dissolution, merger, consolidation or other reorganization of
Tenant, or the sale or transfer of a controlling interest of the
capital stock of Tenant (occurring in one transaction or in a
series of related transactions), shall be deemed a voluntary
assignment of this Lease and subject to the foregoing
provisions.  However, the preceding sentence shall not apply
to corporations the stock of which is traded through a national or
regional stock exchange.  Any attempted assignment or transfer
by Tenant of this Lease or its interest herein without Landlord's
consent when Landlord’s consent is required shall constitute
an Event of Default.

      Notwithstanding the restrictions
on assignment set forth in Section 7.1(a) above, Landlord's
prior consent shall not be required with respect to any assignment
of this Lease resulting from the merger, consolidation, or other
corporate reorganization of Tenant, or the sale or transfer of the
capital stock of Tenant (each, a “Permitted
Transfer”), provided that (i) Tenant after such
merger, consolidation, reorganization or sale of stock has a
creditworthiness (e.g., assets and capitalization) and net
worth (which shall be determined on a pro forma basis using
generally accepted accounting principles consistently applied and
using the most recent financial statements) equal to or greater
than the credit worthiness and net worth of Tenant on the date
hereof, (ii) Tenant after such merger, consolidation,
reorganization or sale of stock agrees in writing to be bound by
the terms and conditions of this Lease and to assume all of the
obligations and liabilities of Tenant under this Lease, (iii)
Tenant after such merger, consolidation, reorganization or sale of
stock shall comply with the use and occupancy provisions of this
Lease, (iv) Tenant provides Landlord with prior written notice of
its intent to assign all or a portion of the Premises not more than
ninety (90) nor less than ten (10) days prior to the date such
assignment is to be effective, (v) the character of Tenant after
the merger, consolidation, reorganization or sale of stock, as the
case may be, and the nature of Tenant's activities on the Premises
and in the Building will not materially adversely affect other
tenants in the Building or materially impair the reputation of the
Building as a first-class office building, (vi) the assignment is
not a so-called "sham" transaction intended by Tenant to circumvent
the provisions of Article VII of the Lease, (vii) no monetary
default or material non-monetary Event of Default exists under any
of the terms and provisions of this Lease that is not fully cured
on or before the effective date of such merger, consolidation,
reorganization or sale of stock, and (viii) the assignment (A) will
not result in a material increase in Operating Expenses for the
Building beyond that which Landlord incurs prior to the assignment,
and (B) will not materially increase the burden on elevators or
other Building systems or equipment over the burden prior to such
assignment.

      In the event of any assignment
of this Lease, Tenant shall remain fully liable as a primary
obligor and principal for Tenant's obligations and responsibilities
under this Lease, including without limitation, the payment of all
rent and other charges required hereunder and the performance of
all conditions and obligations to be performed under this
Lease.

      Tenant shall not have the right
to sublease (which term, as used herein, shall include any type of
subrental arrangement and any type of license to occupy) all or any
part of the Premises or assign this Lease without first obtaining
the prior written consent of Landlord, which consent shall not be
unreasonably withheld, conditioned, or delayed; provided, however,
that it shall not be unreasonable for Landlord to withhold its
consent if a monetary or material non-monetary Event of Default
shall have occurred hereunder that is not fully cured on or before
the effective date of such sublease or assignment, or the nature of
the activities to be conducted by such proposed subtenant or
assignee would materially and adversely affect the other tenants of
the Building or would impair the reputation of the Building as a
first-class office building, or that the financial history or
credit rating of the proposed subtenant or assignee is such that
such assignee or subtenant cannot reasonably be expected to meet
the financial obligations of the assignment and this Lease or the
sublease with appropriate financial margins (taking into account
the financial condition of Tenant and the fact that Tenant is not
released from liability hereunder) or that the character of the
business to be conducted or the proposed use of the Premises by the
proposed subtenant or assignee (i) is likely to materially increase
Operating Expenses for the Building beyond that which Landlord
incurs prior to such proposed subletting or assignment; (ii) is
likely to materially increase the burden on elevators or other
Building systems or equipment over the burden prior to such
proposed subletting or assignment; (iii) violates any provisions or
restrictions contained herein relating to the use or occupancy of
the Premises; or (iv) the proposed sublease or assignment may have
an adverse effect on the real estate investment trust qualification
tests applicable to Landlord and its affiliates.  Any
attempted assignment of this Lease or subletting by Tenant of any
portion of the Premises without Landlord's consent shall constitute
an Event of Default.  Furthermore, Tenant shall not have the
right to assign this Lease or sublease all or any portion of the
Premises without first complying with the provisions of
subsections (a) through (e) below:

      If Tenant desires to sublease
any portion of the Premises, Tenant shall specify to Landlord in
writing the area proposed to be sublet and the date such portion is
to be made available for subleasing.  Landlord shall have the
right, but not the obligation, to retake possession of the portion
of the Premises proposed to be sublet (i) if such portion, together
with any other portion(s) of the Premises and the Wilson Premises
then currently sublet or assigned, exceeds, in the aggregate, fifty
percent (50%) of the rentable area in the Premises (which shall be
deemed to include the Wilson Premises for the purposes of this
Section 7.2(a)), or (ii) if the proposed sublease is for a
term (including all renewal options), of more than ninety percent
(90%) of the balance of the Lease Term; provided, however, that a
sublet or assignment to any Affiliate or Parent of Tenant (as
defined below) or in connection with a merger or other transaction
permitted pursuant to Section 7.1(b) hereof, shall not be
considered an assignment or sublet for the purpose of this
Section 7.2(a); and provided further that such ninety
percent (90%) shall be calculated taking into consideration
Tenant’s renewal options (if the same have been exercised by
Tenant) and only that portion of the term of the sublease for which
Tenant has no right to terminate the sublease.  In the case of
a sublet that would give rise to a recapture right in favor of
Landlord, Tenant shall provide Landlord at least thirty (30) days
advance written notice of Tenant’s intention to sublease a
portion of the Premises, and Landlord shall, within thirty (30)
days after Landlord’s receipt of Tenant’s sublease
request, notify Tenant in writing whether or not Landlord will
retake possession of the portion of the Premises proposed to be
sublet and thereby delete such portion of the Premises from the
Premises being leased to Tenant hereunder.  If Landlord elects
to retake such  portion of the Premises, (i) Landlord shall
retake possession of such portion on the date specified in Tenant's
notice, (ii) Tenant's obligation to pay rent for such portion shall
cease on such date and (iii) Landlord and Tenant shall promptly
execute an amendment to the Lease setting forth the new square
footage of the reduced premises to be occupied by Tenant. 
Thereafter, Tenant shall not have any further rights of any kind,
including any rights of renewal, in or to the portion of the
Premises so retaken.  In the case of a sublet that does not
give rise to a recapture right or if Landlord does not elect to
retake such portion of the Premises within the aforesaid thirty
(30) day period, Tenant shall comply with the provisions of
Section 7.2(b) below with respect to any proposed sublease
of such portion of the Premises.

      Tenant shall have the right to
assign this Lease or sublease any portion of the Premises to the
extent that Landlord has not elected to (or does not have the right
to) retake the same pursuant to Section 7.2(a) above,
provided that Tenant obtains the prior written consent of Landlord
to such proposed assignment or sublease in accordance with
Section 7.2.

       [Intentionally Deleted.]

      Tenant's right to assign this
Lease or sublease any portion of the Premises that Landlord has not
elected to (or does not have the right to) retake pursuant to
Section 7.2(a) above shall expire one hundred twenty (120)
days after the giving of the notice required by subsection
(a).  Thereafter, Tenant shall have no right to assign this
Lease or sublease the portion of the Premises described in the
notice furnished pursuant to Section 7.2(a), unless Tenant
shall have again complied with the procedures set forth in this
Section 7.2.  Notwithstanding the foregoing, if at the
expiration of such one hundred twenty (120) day period Tenant is
still actively and continuously negotiating with the same potential
assignee or subtenant disclosed to Landlord pursuant to this
Section 7.2, then Tenant may continue negotiating with such
potential subtenant (for up to an additional sixty (60) days)
without again complying with the provisions of this Section
7.2, provided Tenant does so actively and without
interruption.  If the assignment or sublease being negotiated
does not at the expiration of such 60-day period qualify as a
proposed assignment or sublease that gives rise to a recapture
right in favor of Landlord, then Tenant may continue negotiating
with such potential assignee or subtenant (for up to an additional
sixty (60) days) without again complying with the provisions of
this Section 7.2, provided Tenant does so actively and
without interruption, however, if at the expiration of the initial
60-day period the assignment or sublease would qualify as a
proposed assignment or sublease that gives rise to a recapture
right, then Landlord shall again have a recapture right even if
Landlord had previously notified Tenant that Landlord would not
recapture the portion of the Premises described in the notice
furnished pursuant to Section 7.2(a).

      If a monetary or material
non-monetary Event of Default shall have occurred hereunder for
which Landlord has exercised its remedies, Landlord shall be
entitled to receive one hundred percent (100%) of any proceeds
derived from assigning this Lease, or proceeds derived from
subletting the Premises or any part thereof in excess of the rent
due under this Lease.  Provided no monetary or material
non-monetary Event of Default shall have occurred hereunder for
which Landlord has exercised its remedies, Landlord shall be
entitled to receive fifty percent (50%) of the proceeds derived
from assigning this Lease or that portion of any proceeds derived
from subletting the Premises or any part thereof in excess of the
sum of (i) the rent due under this Lease, plus (ii) Tenant’s
reasonable out-of-pocket expenses (including tenant improvements
for the proposed assignee or sublessee, legal fees and leasing
commissions, undepreciated costs of tenant improvements made to the
Premises by Tenant or by Landlord at Tenant’s request and at
Tenant’s expense’ in excess of the Improvements
Allowance and other costs and expenses Tenant reasonably incurs in
connection with the assignment or sublease, but excluding any costs
attributable to vacancy periods or “downtime”) that
Tenant reasonably incurred in connection with the procurement of
such sublease or assignment.  Landlord shall have the right to
inspect and audit Tenant's books and records relating to any
sublease or assignment and expenses incurred by Tenant in
connection therewith.  Upon Landlord advising Tenant of any
potential adverse effect of any proposed sublease or assignment on
the real estate investment trust qualification tests applicable to
Landlord and its affiliates and proposing one or more commercially
reasonable solutions to such effect (if any are available), Tenant
will exercise commercially reasonable efforts to structure any such
proposed sublease or assignment so that the portion of the excess
rents that become payable to Landlord will not have such adverse
effect, and if Tenant is unable so to structure any proposed
sublease or assignment, then Landlord shall have the right in its
sole and absolute discretion to withhold its consent to the
proposed sublease or assignment or to terminate this Lease with
respect to the proposed sublet space as provided in this
Section.  The provisions of this Section 7.2(e) shall
not apply with respect to subleases or assignments to a Parent or
Affiliate of Tenant.

      Notwithstanding the provisions
of Sections 7.1 or 7.2 hereof to the contrary, if consent to
any assignment or subletting is required by the holder of any
mortgage on the Building, no assignment of this Lease or sublease
of all or any portions of the Premises shall be permitted without
the prior written consent of such holder; provided, however, that
such holder shall use the same approval standards and criteria as
required of Landlord pursuant to Sections 7.1 or 7.2, as
applicable.  Landlord agrees to use its reasonable efforts to
obtain promptly such required consent to any proposed subletting or
assignment.

      The consent by Landlord to any
assignment or subletting shall not be construed as a waiver or
release of Tenant from any and all liability for the performance of
all covenants and obligations to be performed by Tenant under this
Lease, nor shall the collection or acceptance of rent from any
assignee, transferee or subtenant constitute a waiver or release of
Tenant from any of its liabilities or obligations under this
Lease.  Landlord's consent to any assignment or subletting
shall not be construed as relieving Tenant from the obligation of
complying with the provisions of Sections 7.1 or 7.2 hereof,
as applicable, with respect to any subsequent assignment or
subletting.  For any period during which Tenant is in monetary
or material non-monetary default hereunder beyond any applicable
grace or cure period, Tenant hereby assigns to Landlord the rent
due from any subtenant of Tenant and hereby authorizes each
subtenant to pay said rent directly to Landlord.  Tenant
further agrees to submit any and all instruments of assignment and
sublease to Landlord for Landlord's prior written approval as to
form and substance, which approval shall not be unreasonably
withheld, conditioned or delayed, but which instruments shall
provide, as an express condition precedent to Landlord's prior
approval, that any sublessee or assignee agree to remain jointly
and severally liable to Landlord for all obligations imposed by any
such agreement of assignment or sublease.

     
        Notwithstanding the
above restrictions on subletting and assignments, Landlord’s
prior consent shall not be required with respect to any assignment
or subletting to an “Affiliate of Tenant” (as
hereinafter defined) or a “Parent of Tenant” (as
hereinafter defined), provided (i) that such assignee or sublessee
has a creditworthiness (e.g., assets and capitalization) and
net worth (which shall be determined on a pro forma basis using
generally accepted accounting principles consistently applied and
using the most recent financial statements) as certified to
Landlord by Tenant’s chief financial officer, (ii) that such
assignee or sublessee agrees in writing to be bound by the terms
and conditions of this Lease and to assume all of the obligations
and liabilities of Tenant under this Lease, (iii) that such
assignee or sublessee shall conduct business which is a permitted
use pursuant to Article VI of this Lease, (iv) that Tenant provides
Landlord with prior written notice of its intent to assign or
sublease all or a portion of the Premises not more than ninety (90)
nor less than thirty (30) days prior to the date such assignee or
sublessee is to occupy the Premises, (v) that the character of such
person or entity and the nature of its activities on the Premises
and in the Building will not adversely affect other tenants in the
Building or impair the reputation of the Building as a first-class
office building, and (vi) that the sublease or assignment with such
person or entity is not a so-called “sham” transaction
intended by Tenant to circumvent the provisions of this Article
VII, and provided further that if such Affiliate of Tenant or
Parent of Tenant ceases to be an Affiliate of Tenant or Parent of
Tenant, as the case may be, such cessation, at Landlord’s
sole option, for all purposes hereunder, shall be a default under
this Lease for which Landlord shall have all of the remedies
available to it pursuant to Article XIX hereof.

      In the event of any such
assignment or subletting pursuant to this Section 7.5,
Tenant shall remain fully liable as a primary obligor and principal
for Tenant’s obligations and responsibilities under this
Lease, including without limitation, the payment of all rent and
other charges required hereunder and the performance of all
conditions and obligations to be performed under this Lease.

      For purposes of this Section
7.5, an “Affiliate of Tenant” shall mean any
corporation, association, trust or partnership (i) which Controls
(as herein defined) Tenant or (ii) which is under the Control of
Tenant through stock ownership or otherwise or (iii) which is under
common Control with Tenant.  For the purposes hereof, a
“Parent of Tenant” shall mean any corporation,
association, trust or partnership (A) which Controls Tenant or (B)
which owns more than fifty percent (50%) of the issued and
outstanding voting securities of Tenant.  The terms
“Control” or “Controls” as
used in this Section 7.5 shall mean ownership (directly or
indirectly) of (a) more than fifty percent (50%) of the voting
securities of an entity or possession of the right to vote more
than fifty percent (50%) of the voting interest in the ordinary
direction of the entity’s affairs or (b) the amount of votes
sufficient to elect a majority of the board of directors of the
corporation in question. 

     
        Notwithstanding the
above restrictions on subletting and assignments, Landlord
acknowledges that Tenant intends to allow individuals (or teams of
individuals) working on projects with Tenant, Tenant’s
business invitees and Tenant’s customers to temporarily use
and occupy portions of the Premises from time to time, but not in
excess of twenty percent (20%) of the rentable area of the Premises
offices at any one time, including, without limitation, employees
of third-party businesses whose co-location with Tenant at the
Premises facilitates Tenant’s business operations or its
ability to meet its obligations to its customers (any of the
foregoing herein called a “Permitted
Occupant”).  Provided that such use and occupancy is
subject to the terms and conditions of this Lease, and provided
that (i) Tenant remains fully liable under this Lease; (ii) such
Permitted Occupant and all employees of the Permitted Occupant are
expressly covered under Tenant’s insurance policies that
Tenant is required to maintain hereunder; and (iii) the occupancy
arrangement is not a subterfuge by Tenant to avoid its obligations
under this Article VII, then Tenant shall notify Landlord
thereof, but Landlord’s consent shall not be required for any
such occupancy arrangement and such occupancy shall neither be
subject to this Article VII nor deemed a violation of this
Lease.  None of the foregoing shall prohibit Tenant from
recovering an equitable portion of its costs (including a pro rata
portion of Tenant’s rental obligations) from any Permitted
Occupant..

      Tenant’s rights under this
Section 7.6 are personal to and may be exercised only by The
Titan Corporation and shall not be exercised by any assignee or
subtenant.

      Notwithstanding the thirty (30)
day time period set forth in Section 7.2 above with respect
to proposed assignments and subleases for which Landlord has a
right to recapture the Premises or the proposed sublease space,
Landlord agrees to approve or disapprove any proposed sublease or
assignment (including any proposed sublease for which Landlord has
a right to recapture) within fifteen (15) business days after
Landlord’s receipt of Tenant’s request therefor and
sufficient information about the proposed subtenant or assignee to
enable Landlord to make the determination called for by this
Article VII, which request states in bold capital letters
that the request will be deemed approved in accordance with
Article VII of the Lease if Landlord fails to respond in
fifteen (15) business days.  If Landlord fails to respond to
Tenant within such fifteen (15)-business day period, then Landlord
shall be deemed to have approved such sublease or assignment,
subject to the terms and conditions of Landlord’s standard
consent form, which is attached hereto as Exhibit K. 
The parties hereby agree that Landlord’s thirty-(30) day
recapture period shall run concurrently with the fifteen (15)
business day period specified above provided Tenant delivers with
its initial notice of its intent to assign or sublease sufficient
information about the proposed subtenant to enable Landlord to make
the determination called for in this Article VII. 

TENANT'S MAINTENANCE AND REPAIRS

      Subject to the provisions of
Section 8.3, Tenant will keep and maintain the Premises and
all fixtures and equipment located therein in clean, safe and
sanitary condition, will take good care thereof and make all
required repairs thereto, and will suffer no waste or injury
thereto.  At the expiration or other termination of the Lease
Term, Tenant shall surrender the Premises, broom clean, in the same
order and condition in which they are in on the Lease Commencement
Date (or, if later, substantial completion of the Leasehold Work),
permitted alterations, ordinary wear and tear and unavoidable
damage by the elements excepted and except as otherwise provided in
Article XVII (Damage and Destruction) and Article
XVIII (Condemnation).  Landlord, at its cost, shall
provide and install all replacement fluorescent tubes for building
standard light fixtures; all other bulbs, tubes and lighting
fixtures for the Premises shall be provided and installed by
Landlord at Tenant's cost and expense.

      Except as otherwise provided in
Article XVII or Section 13.4 hereof, all injury,
breakage and damage to the Premises shall be repaired by and at the
sole expense of Tenant, except that Landlord shall have the right,
at its option, to make such repairs and to charge Tenant for all
costs and expenses reasonably incurred in connection therewith as
additional rent hereunder; provided that, with respect to any such
injury, breakage or damage to the Premises only, Landlord shall
not, except in case of an emergency, have the right to make such
repairs and charge Tenant therefor unless Tenant fails to commence
such repairs within ten (10) days after the date the damage occurs
(or such shorter period as may be reasonable given the nature of
the damage) or Tenant fails thereafter to promptly and diligently
prosecute such repairs to completion in accordance with the
requirements of this Lease).  The liability of Tenant for such
costs and expenses shall be reduced by the amount of any insurance
proceeds received by Landlord from Landlord’s and/or
Tenant’s insurer on account of such injury, breakage or
damage  (or such proceeds as would have been available if
Landlord carried all insurance required to be carried by Landlord
hereunder).  Notwithstanding anything contained herein to the
contrary, in the case of damage to the Premises that is caused by
(i) the negligence or willful misconduct of Landlord or
Landlord’s employees, agents or contractors in connection
with the routine maintenance and operation of the Building, or (ii)
the gross negligence of Landlord or Landlord’s employees,
agents or contractors in connection with the provision of
maintenance or services requested by Tenant, Landlord shall be
responsible for payment of a portion of the repair costs equal to
the amount of the deductible under Tenant’s insurance policy,
but not to exceed the amount of the deductible that would apply to
a similar occurrence under Landlord’s insurance policy.

      Landlord shall keep and maintain
the exterior and demising walls, foundations, roof, landscaped
areas and common areas that form a part of the Building, and the
base Building standard mechanical, electrical, HVAC plumbing and
fire life safety systems, pipes and conduits that are provided by
Landlord in the operation of the Building or, on a non-exclusive
basis, the Premises in clean, safe, sanitary and good operating
condition in accordance with standards customarily maintained by
first-class office buildings located within the area bounded by New
Dominion Parkway, Reston Parkway, Town Center Parkway and Dulles
Toll Road in Reston, Virginia (collectively, the “Market
Area”), and will make all required repairs thereto. 
All common or public areas of the Building and the land upon which
it is situated (including without limitation the first floor lobby
area and the exterior landscaping) shall be maintained by Landlord
in accordance with standards customarily maintained by first-class
office buildings in the Market Area.  Tenant shall promptly
provide Landlord with written notice of any defect or need for
repairs in or about the Building of which Tenant is aware;
provided, however, Landlord's obligation to repair hereunder shall
not be limited to matters of which it has been given notice by
Tenant.  Notwithstanding any of the foregoing to the contrary,
maintenance and repair of special tenant areas, facilities,
finishes and equipment (including, but not limited to, any special
fire protection equipment, telecommunications and computer
equipment, kitchen/galley equipment, air-conditioning equipment
serving the Premises only and all other furniture, furnishings and
equipment of Tenant and all Alterations) shall be the sole
responsibility of Tenant and shall be deemed not to be a part of
the Building structure and systems.  Notwithstanding anything
contained herein to the contrary, in the case of damage to the
Building that is caused by the negligence or willful misconduct of
Tenant or any agent, employee, subtenant, contractor, customer,
guest or invitee of Tenant (collectively,
“Invitee”), Tenant shall be responsible for
payment of the amount by which the costs and expenses to repair
exceed the insurance proceeds, if any, received by Landlord on
account of such damage (or which would have been received if
Landlord maintained the insurance required to be maintained by
Landlord hereunder), including, but not limited to, the amount of
Landlord’s commercially reasonable deductible and any
non-insured events.  In undertaking any repairs, testing,
adjusting or balance of any Building system, any alterations,
additions, improvements or other maintenance work in the Premises
or in the Building, or in exercising any right of access into the
Premises, Landlord shall (i) perform such activity in a manner and
at a time or times that will minimize interference with
Tenant’s use and occupancy of the Premises and that will not
unreasonably delay or interfere with Tenant’s use and
occupancy of the Premises or the performance by Tenant of
alterations; (ii) promptly repair any damage caused by Landlord;
and (iii) upon completion of such activity, restore any portion of
the Premises that may have been collaterally affected by such
activity to the condition existing before such activity.

      (a)  In the event Landlord
fails to perform any of the obligations on Landlord’s part to
be performed pursuant to Article VIII of this Lease or to
repair any latent defects as required under the Work Agreement
(which failure materially affects Tenant’s access to or use
of the Premises) within thirty (30) days after written notice from
Tenant to Landlord and to the holder of any mortgage on the
Premises of which Landlord has given Tenant notice or of which
Tenant has actual notice, specifying the nature of such obligation
(or if such obligation is of the type which cannot be completed
within thirty (30) days, then if Landlord fails to (i) commence to
perform such obligation within thirty (30) days after such written
notice from Tenant and (ii) thereafter prosecute the same to
completion with due diligence given the nature of such obligation)
(it being understood and agreed that, in connection with the
foregoing, the mortgagee may negotiate for additional cure periods
in any subordination agreement between such mortgagee and Tenant
with respect to this Lease), then thereafter at any time prior to
Landlord's (or the holder of any mortgage) commencing to perform
such obligation or subsequent to Landlord (or the holder of any
mortgage) commencing to perform such obligation if Landlord (or the
holder of any mortgage) has not prosecuted the same to completion
with due diligence given the nature of such obligation, and if such
failure to perform an obligation is continuing for ten (10) days
following Landlord’s receipt of a second written request
thereof following the expiration of the aforesaid cure periods,
then Tenant may, but need not, perform such obligation and charge
the reasonable out-of-pocket cost thereof to Landlord.  In the
event of an emergency involving a risk to life or material damage
to property (as reasonably determined by Landlord or Tenant), then
the provisions of this Section shall apply, except that the
aforesaid thirty (30)-day and ten (10)-day periods shall be reduced
to such shorter periods as may be reasonable under the
circumstances, and in Tenant’s notice to Landlord, Tenant
shall specify whether Tenant believes the failure constitutes any
such emergency.  Landlord shall reimburse Tenant for the
reasonable out-of-pocket costs of such repairs within thirty (30)
days following Landlord's receipt of copies of all invoices, bills,
receipts or charges incurred by Tenant in making such
repairs.  Such repairs by Tenant shall be effected in a
first-class manner and otherwise in accordance with the provisions
of this Lease.

      If Landlord fails to pay to
Tenant when due any sum which Tenant is entitled to recover from
Landlord pursuant to Section 8.4(a), then if Tenant has
obtained a final, non-appealable court judgment that such sum was
due and payable to Tenant under the terms of Section 8.4(a)
but was wrongfully withheld by Landlord, then Tenant may credit the
amount of such judgment against rent due under this Lease, provided
that the amount that shall be credited against the annual base rent
each month shall not exceed ten percent (10%) of the monthly base
rent. 

TENANT ALTERATIONS

      The initial improvements to the
Premises shall be constructed in accordance with Exhibit B
attached hereto and made a part hereof.  It is understood and
agreed that except as provided in the preceding sentence Landlord
will not make, and is under no obligation to make, any structural
or other alterations, decorations, additions or improvements in or
to the Premises.

      Tenant will not make or permit
anyone to make any alterations, decorations, additions or
improvements (hereinafter referred to collectively as
"improvements" or “Alterations”),
structural or otherwise, in or to the Premises or the Building,
without the prior written consent of Landlord. 

      Improvements to the interior of
the Premises which (i) are not readily visible to the exterior of
the Building or the common and public areas thereof, (ii) are not
structural, (iii) do not affect the electrical, mechanical, fire
or  life safety systems within the Building and (iv) are
otherwise in conformance with all applicable building, zoning and
other codes or regulations affecting the Building, shall be subject
to the prior written consent of Landlord, which consent shall not
be unreasonably withheld, conditioned, or delayed.  Landlord
agrees to approve or disapprove any proposed Alterations within ten
(10) business days after Landlord’s receipt of Tenant’s
request therefor and sufficient information about the proposed
Alterations to enable Landlord to make the determination called for
by this Section 9.2.  If Landlord fails to respond to
Tenant within such ten (10) business day period, Tenant shall
deliver a second written request for Landlord’s approval,
which second request shall be delivered to Landlord and shall
clearly state that the request will be deemed approved in
accordance with this Section 9.2 if Landlord fails to
respond within five (5) business days.  If Landlord fails to
respond to Tenant within five (5) business days after
Landlord’s receipt of such second notice, then Landlord shall
be deemed to have approved the proposed Alterations. 
Notwithstanding the foregoing, Tenant shall have the right, after
providing at least ten (10) days prior written notice to Landlord,
but without the necessity of obtaining Landlord’s consent, to
make  nonstructural Alterations  in and to the Premises
that (I) meet the requirements of clauses (i)-(iv) above, (II) do
not require the issuance of a building permit, (III) are not
visible from outside the Premises, and (IV) do not cost, in the
aggregate when combined with improvements made to the Wilson
Premises, more than seventy thousand dollars ($70,000.00) per
Alteration, nor more than two hundred fifty thousand dollars
($250,000) in a twelve (12) month period. 

      Any Alterations made by Tenant
shall be made:  (i) in a good, workmanlike, first-class and
prompt manner and otherwise in accordance with the rules for
contractors set forth in Exhibit B; (ii) using new materials
only; (iii) by a contractor (and, if reasonably required by
Landlord, under the supervision of an architect) approved in
writing by Landlord (which approval shall not be unreasonably
withheld, conditioned or delayed), it being agreed that if Landlord
does not respond to any such request for approval within ten (10)
business days after Landlord’s receipt of Tenant’s
written request for approval that states in bold letters on the
face thereof that failure to respond within ten (10) business days
will result in landlord’s deemed approval, then such
contractor (or architect) shall be deemed approved by Landlord;
(iv) in accordance with plans and specifications prepared by
an engineer or architect reasonably acceptable to Landlord, which
plans and specifications shall be approved in writing by Landlord,
which approval shall not be unreasonably withheld, conditioned or
delayed (Tenant hereby agreeing to pay the reasonable,
out-of-pocket costs and expenses incurred by Landlord for
third-party consultants necessary for Landlord’s review of
the same); (v) in accordance with all Legal Requirements and
the requirements of any insurance company insuring the Building or
any portion thereof; and (vi) after obtaining public liability and
worker's compensation insurance policies reasonably approved in
writing by Landlord, which policies shall cover every person who
will perform any work with respect to such Alteration. 

      Prior to each payment to any
contractor, subcontractor, laborer, or material supplier for all
work, labor, and services to be performed and materials to be
furnished in connection with Alterations, Tenant  shall obtain
and deliver to Landlord written, unconditional waivers of
mechanics' and materialmen's liens against the Premises and the
Building from all proposed contractors, subcontractors, laborers
and material suppliers for all work, labor and services performed
and materials furnished in connection with Alterations through the
date of the then-current requisition conditioned only on payment of
the amount requisitioned.  If any lien (or a petition to
establish such lien) is filed in connection with any Alteration,
such lien (or petition) shall be discharged by Tenant within ten
(10) business days thereafter, at Tenant's sole cost and expense,
by the payment thereof or by the filing of a bond acceptable to
Landlord.  If Landlord gives its consent to the making of any
Alteration, such consent shall not be deemed to be an agreement or
consent by Landlord to subject its interest in the Premises or the
Building to any liens which may be filed in connection
therewith. 

      All Alterations involving
structural, electrical, mechanical or plumbing work, the heating,
ventilation and air conditioning system of the Premises or the
Building, and the roof of the Building shall, at Landlord's
election, be performed by Landlord's designated contractor or
subcontractor at Tenant's expense; provided, however, that Landlord
shall obtain competitive rates therefor, and if Landlord is unable
to obtain competitive rates therefor, then, except if the failure
to use Landlord’s designated contractor would void or
otherwise adversely affect the warranty of any Building structure
or system warranties, Tenant shall have the right to choose another
contractor or subcontractor that is reasonably acceptable to
Landlord.  Promptly after the completion of an Alteration that
changes the then-current as-built drawings, Tenant at its expense
shall deliver to Landlord three (3) sets of accurate as-built
drawings and a CADD computer disc showing such Alteration in
place. 

      When granting its consent,
Landlord may impose reasonable conditions, including, without
limitation, the approval of plans and specifications, approval of
the contractor or other persons who will perform the work, and the
obtaining of required permits and specified insurance.  It
shall be reasonable for Landlord to insist that portions of the
Premises visible to the public shall maintain a uniform appearance
with the rest of the Building.  All improvements permitted by
Landlord must conform to all rules and regulations established from
time to time by the Underwriters' Association of the Commonwealth
of Virginia and to all laws, regulations and requirements of the
Federal, state and local  governments.  Landlord's review
and approval of any such plans and specifications and its consent
to perform work described therein shall not be deemed an agreement
by Landlord that such plans, specifications and work conform with
all applicable Legal Requirements and requirements of the insurers
of the Building ("Insurance Requirements") nor deemed a
waiver of Tenant's obligations under this Lease with respect to all
applicable Legal Requirements and Insurance Requirements nor impose
any liability or obligation upon Landlord with respect to the
completeness, design sufficiency or compliance with all applicable
Legal Requirements or Insurance Requirements of such plans,
specifications and work.  If Tenant shall fail to discharge
any such mechanic's or materialmen's lien, Landlord may, at its
option, discharge such lien and treat the cost thereof (including
reasonable attorneys' fees incurred in connection therewith) as
additional rent payable with the next monthly installment of annual
base rent falling due; it being expressly agreed that such
discharge by Landlord shall not be deemed to waive or release the
default of Tenant in not discharging such lien.  It is
understood and agreed that any improvements to the Premises shall
be conducted on behalf of Tenant and not on behalf of Landlord, and
that Tenant shall be deemed the "owner" of such improvements (and
not the agent of Landlord).

      Tenant shall indemnify and hold
Landlord harmless from and against any and all expenses, liens,
claims, liabilities and damages based on or arising, directly or
indirectly, by reason of the making of any improvements to the
Premises by Tenant, or its contractors, agents or employees. 
If any improvements are made without the prior written consent of
Landlord, Landlord shall have the right to remove and correct such
improvements and restore the Premises to their condition
immediately prior thereto, and Tenant shall be liable for all
expenses incurred by Landlord in connection therewith.  All
improvements to the Premises or the Building made by either party
shall remain upon and be surrendered with the Premises as a part
thereof at the end of the Lease Term unless (i) Tenant requests,
when it submits its plans and specifications for such improvements
to Landlord for Landlord's approval in accordance with Section
9.2, Landlord's consent to Tenant's removal of such
improvements upon the expiration or earlier termination of the
Lease Term and Landlord so consents or (ii) Landlord specifies in
its approval of the plans and specifications for such improvements
that Tenant must remove the improvements upon the expiration or
earlier termination of the Lease Term; provided, however, that if
no Event of Default has occurred and is still continuing under this
Lease, then Tenant shall have the right to remove, prior to the
expiration of the Lease Term, all movable furniture, shelving,
appliances, computers, security equipment, trade fixtures,
furnishings and equipment installed in the Premises solely at the
expense of Tenant; and provided further, however, that Landlord may
only require removal and/or restoration of the Generator
Alterations and any Alterations to the base building structure or
systems.  All damages and injury to the Premises or the
Building caused by such removal shall be repaired by Tenant, at
Tenant's sole expense.  If such property of Tenant is not
removed by Tenant prior to the expiration or termination of this
Lease, the same shall become the property of Landlord and shall be
surrendered with the Premises as a part thereof.

SIGNS AND FURNISHINGS

(a)        No sign,
advertisement or notice referring to Tenant shall be inscribed,
painted, affixed or otherwise displayed on any part of the exterior
or the interior of the Building except (i) suite entry signage on
each floor of the Premises and on the directories and doors of
offices and such other areas as are designated by Landlord, (ii)
signage (including Tenant’s logo) in elevator lobbies located
on full floors occupied by Tenant, or (iii) signage inside the
Premises in a manner that such signs, advertisements, and notices
are not visible from outside the Premises; provided all such
signage in clauses (i) and (ii) above shall be subject to
Landlord’s approval of the size, number, location, color and
design thereof, and in all cases such that the same are in
accordance with any applicable state or local building code or
zoning regulations; provided further, however, that
Landlord’s approval shall not be unreasonably withheld,
conditioned or delayed.  All of Tenant's signs that are
approved by Landlord shall be installed by Landlord at Tenant's
cost and expense and shall be removed by Tenant, at Tenant's sole
cost and expense, at the end of the Lease Term (and Tenant shall
repair any damage to the Building or the Premises caused by such
removal).  If any sign, advertisement or notice that has not
been approved by Landlord is exhibited or installed by Tenant,
Landlord shall have the right to remove the same at Tenant's
expense.  Tenant shall be entitled to one (1) directory line
per one thousand (1,000) rentable square feet of the Premises (but
in no event less than Tenant's proportionate share (as defined in
Section 4.1(a)), on the Building's lobby directory, at no
additional cost to Tenant.  Tenant may list its name and the
names of Tenant's employees and permitted subtenants and assignees
on the Building's lobby directory, but only to the extent the
number of lines devoted to all such names does not exceed the total
number of lines on such directory allocated to Tenant as set forth
in the preceding sentence).  Notwithstanding the foregoing, if
Tenant requests that Landlord change the name, initially listed
thereon, then Landlord agrees to do so provided Tenant reimburses
Landlord therefor for all direct and indirect costs incurred by
Landlord therefor.  Landlord's acceptance of any name for
listing on the Building directory will not be deemed, nor will it
substitute for, Landlord's consent, as required by this Lease, to
any sublease, assignment or other occupancy of the Premises. 
Landlord shall have the right to prohibit any advertisement of or
by Tenant which in its opinion tends to impair the reputation of
the Building or its desirability as a first-class office building,
and upon notice from Landlord, Tenant shall immediately refrain
from and discontinue any such advertisement; provided, however,
that Tenant shall have the continuing right to indicate the
Building’s address in all marketing materials.  Landlord
reserves the right to affix, install and display signs,
advertisements and notices on any part of the exterior or interior
of the Building but not in the Premises (which for the purpose of
this sentence shall include the elevator lobbies of each entire
floor leased by Tenant), except as may be required by law or in
emergency situations. 

      Notwithstanding the foregoing,
so long as Tenant is leasing from Landlord at least 100,000 square
feet of rentable area of the Building (including space occupied by
Permitted Occupants but excluding the Wilson Premises) and if
Tenant (together with any Permitted Occupants) occupies at least
100,000 square feet of rentable area in the Building (including the
Wilson Premises), then Tenant shall have the right to signage on
the exterior of the Building as follows: (i) exclusive signage at
the top of the Building on one face of the Building
(“Rooftop Signage”) up to the maximum square
footage available for Rooftop Signage under applicable Legal
Requirements, provided, however, that Tenant’s exclusive
right to Rooftop Signage, if applicable, shall not apply to ground
floor retail storefront signage, and (ii) signage adjacent to the
first floor retail entrance, which signage identifying Tenant shall
be subject to the following terms and conditions:  (1) Tenant
shall, at Tenant’s sole cost, install such signage; (2)
Tenant shall, at Tenant’s sole cost maintain such signage in
a first class condition; (3) Tenant shall, at Tenant’s cost,
obtain all necessary permits and approvals prior to commencing to
install the signage (including without limitation those approvals
required from the Reston Town Center Design Review Board); (4) the
size, location, materials, color, style and manner of installation
of such signage shall be subject to Landlord’s prior written
approval, which approval may be granted or withheld in Landlord's
sole and absolute discretion; and (5) at the end of the Lease Term
(or at any earlier time that Tenant no longer has a right to such
sign), Tenant shall, at Tenant’s sole cost, remove such sign
and repair any damage to the Building caused by said removal to the
condition that existed prior to the installation of such
sign.  If Tenant’s Rooftop Signage uses all of the
available Rooftop Signage allocable to the Building, then Landlord
shall not seek to obtain additional Rooftop Signage rights from the
applicable authority for another tenant, however, the foregoing
shall not prohibit Landlord from obtaining additional rights for
ground floor retail storefront signage.  The signage rights
set forth in this Section 10.1(b) shall be personal to The
Titan Corporation.  If an Event of Default has occurred for
which Landlord has exercised its remedies under this Lease, then
Tenant’s rights under this Section 10.1(b) shall no
longer apply.

Landlord shall have the right to approve, in its reasonable
discretion, the weight and position of safes and other heavy
equipment and fixtures, which, if considered necessary by the
Landlord, shall be installed in such manner as Landlord’s
structural engineer reasonably directs in order to distribute their
weight adequately given the floor loading as set forth in
Schedule I to Exhibit B; provided that the
reasonable costs of any such structural engineer’s review
with respect thereto shall be borne by Tenant and payable as
additional rent hereunder, subject to the application of the
Improvements Allowance if funds remain available.  Any and all
damage or injury to the Premises or the Building caused by moving
the property of Tenant into or out of the Premises, or due to the
same being in or upon the Premises, shall be repaired at the sole
cost of Tenant.  No furniture, equipment or other bulky matter
of any description will be received into the Building or carried in
the elevators except as approved by Landlord, and all such
furniture, equipment and other bulky matter shall be delivered only
through the designated delivery entrance of the Building and the
designated freight elevator.  All moving of furniture,
equipment and other materials shall be under the supervision of
Landlord, who shall not, however, be responsible for any damage to
or charges for moving the same.  Tenant agrees to remove
promptly from the sidewalks adjacent to the Building any of
Tenant's furniture, equipment or other material there delivered or
deposited.

TENANT' S EQUIPMENT

The Building was designed and constructed to, and the Building
shall, provide electrical capacity to the Premises in accordance
with Schedule I to Exhibit B.  Any electrically
operated equipment or machinery to be installed in the Premises as
part of the initial Leasehold Work shall conform to the
requirements of such Schedule I to Exhibit B, and, if
approved by Landlord pursuant to Exhibit B, shall be deemed
to comply with this Article XI, subject to Tenant’s
obligation to pay for excess electricity consumption as provided in
Section 4.8 hereof.  Thereafter, Tenant will not install or
operate in the Premises any electrically operated equipment or
machinery that operates on greater than 110/208 volt power or
exceeds normal electrical usage without first obtaining the prior
written consent of Landlord, which consent shall not be withheld,
conditioned, or delayed provided (a) such excess capacity is
available in the Building and (b) such equipment or machinery
does not overload the affected circuitry.  Subject to the
“most favored nation” status afforded Tenant pursuant
to Section 4.8 hereof, Landlord may condition such consent
upon the payment by Tenant of additional rent in compensation for
the excess consumption of electricity or other utilities and for
the cost of any separate metering or sub-metering of any such
equipment that is required and any additional wiring or apparatus
that may be occasioned by the operation of such equipment or
machinery.  Tenant shall not install any equipment of any type
or nature that will or may necessitate any changes, replacements or
additions to, or in the use of, the water system, heating system,
plumbing system, air-conditioning system or electrical system of
the Premises or the Building, without first obtaining the prior
written consent of Landlord.  Business machines and mechanical
equipment belonging to Tenant which cause noise or vibration that
may be transmitted to the structure of the Building or to any space
therein to such a degree as to be reasonably objectionable to
Landlord or to any tenant in the Building shall be installed and
maintained by Tenant, at Tenant's expense, on vibration eliminators
or other devices sufficient to reduce such noise and vibration to a
level satisfactory to Landlord.  It is understood and agreed
that the "normal electrical usage" includes the use, for normal
general office purposes, of copying machines, personal or desktop
computers, food preparation and storage equipment of the size and
type customarily used in office pantries/galleys and other standard
office equipment, but excludes the use of any machine that uses
electrical capacity in excess of that provided to the Premises as
set forth in Schedule I to Exhibit B.

INSPECTION BY LANDLORD

Tenant will permit Landlord, its agents or representatives, to
enter the Premises, without charge therefor to Landlord and without
diminution of the rent payable by Tenant, to examine, inspect and
protect the Premises and the Building, and to make such alterations
or repairs as in the sole judgment of Landlord may be deemed
necessary at any time during the Lease Term, and, at any time
during the last eighteen (18) months of the Lease Term, to exhibit
the same to prospective tenants.  In connection with any such
entry, Landlord shall endeavor (i) to minimize the disruption to
Tenant's use of the Premises (for example, for alterations and
repairs to be performed after Landlord has completed its initial
build-out of all of the premises in the Building, Landlord shall
use reasonable efforts to perform any disruptive work after
business hours), and (ii) to provide twenty-four (24) hours prior
notice to Tenant (except in cases of emergency, which shall not
include exhibiting the Premises to prospective tenants). 
Subject to the provisions of Section 13.4, Landlord, upon
completion of any such alterations or repairs, shall substantially
restore the affected area and any improvements therein (excluding
personal property) to their “as was” condition, subject
to reasonable wear and tear.  Tenant may elect to have its
designee accompany Landlord, its agents or representatives while in
the Premises; provided, however, that (a) except for “secure
areas”, Tenant’s failure to make its designee available
at the time of Landlord’s entry shall not prevent Landlord,
its agents or representatives from entering the Premises, and (b)
in the event of an emergency (whether or not such emergency
involves any of Tenant’s “secure areas”),
Landlord is not required to be accompanied by any such
designee.  Tenant shall have the right to designate all or any
portion of the Premises as “secure areas” to which
access shall be restricted (except in the event of an
emergency).  If Landlord desires to enter into and upon any of
Tenant’s “secure areas”, then Landlord shall so
notify Tenant and Tenant shall make access to such portions of the
Premises available to Landlord within forty-eight (48) hours
thereafter unless Tenant agrees otherwise (except in the event of
an emergency, in which event Landlord shall have immediate access
to the applicable “secure areas”).  Except in the
event of an emergency, Landlord shall be accompanied by an employee
of Tenant in any “secure areas”, and Landlord shall not
unreasonably interfere with Tenant’s use of the Premises
during any such entry.

INSURANCE

Tenant shall not conduct or permit to be conducted any
activity, or place any equipment in or about the Premises or the
Building which will in any way increase the rate of fire insurance
or other insurance on the Building.  If any increase in the
rate of fire insurance or other insurance is stated by any
insurance company or by the applicable Insurance Rating Bureau to
be due to any activity or equipment of Tenant in or about the
Premises or the Building, such statement shall be presumptive
evidence that the increase in such rate is due to such activity or
equipment and, as a result thereof, Tenant shall be liable for the
amount of such increase.  Tenant shall reimburse Landlord for
such amount upon written demand from Landlord and such sum shall be
considered additional rent payable hereunder. 

Throughout the term of the Lease, Landlord shall insure the
Building against loss due to fire and other casualties included in
standard extended coverage insurance policies in an amount equal to
at least 90% of the replacement cost thereof, exclusive of
architectural and engineering fees, excavations, footings and
foundations.  Throughout the Lease Term, Landlord shall
maintain commercial general liability insurance covering the common
areas of the Building and the Complex (including without limitation
contractual liability coverage and broad form property damage) in
amounts at least as high as the greater of (i) that required of
Tenant in this Lease, and (ii) that required by Landlord’s
lender.  Such insurance shall also cover the Shell Items (as
defined on Schedule I to Exhibit B), but shall not cover (a)
any amount to restore the Premises or (b) Tenant's furniture,
fixtures, equipment or other personal property of Tenant on the
Premises.  Such Landlord insurance shall comply with the
provisions of Sections 13.3(b)(1), (3), (4), and with
respect to the structural portions and common areas of the
Building, Sections 13.3(b)(6) and (8).  Throughout the
Lease Term, Landlord shall also maintain worker’s
compensation insurance with respect to any employees of Landlord as
required by law, boiler insurance, and business interruption and/or
rent loss insurance, each in amounts not less than that which is
customarily maintained by owners of other first-class office
buildings in the Market Area.  In addition, during any periods
of construction, Landlord shall (or shall cause its contractor to)
maintain builder’s risk insurance.  Provided The Titan
Corporation is leasing and occupying at least 200,000 square feet
of rentable area of the Building for its own account (including
space occupied by Permitted Occupants and including the Wilson
Premises), promptly following Tenant’s express written
request therefor, Landlord shall name Tenant as an additional
insured on Landlord’s commercial general liability insurance
policy.

        Throughout the Lease
Term, Tenant shall obtain and maintain (1) commercial general
liability insurance (written on an occurrence basis) including
contractual liability coverage insuring the obligations assumed by
Tenant under this Lease, premises and operations coverage, broad
form property damage coverage and independent contractors coverage,
and containing an endorsement for personal injury, (2) business
interruption insurance, (3) all-risk property insurance, (4)
comprehensive automobile liability insurance (covering automobiles
owned by Tenant, if any), (5) worker's compensation insurance, and
(6) employer's liability insurance.  Such commercial general
liability insurance shall be in minimum amounts typically carried
by prudent tenants engaged in similar operations, but in no event
shall be in an amount less than Two Million Dollars ($2,000,000)
combined single limit per occurrence with a Four Million Dollar
($4,000,000) annual aggregate.  Such business interruption
insurance shall be in minimum amounts typically carried by prudent
tenants engaged in similar operations, but in no event shall be in
an amount less than the Base Rent and Additional Rent then in
effect during any Lease Year.  Such property insurance shall
be in an amount not less than that required to replace all of the
original tenant improvements installed in the Premises pursuant to
Exhibit B (except for the Shell Items provided by Landlord,
to the extent the same were originally incorporated into the
Premises), all Alterations and all other contents of the Premises
(including, without limitation, Tenant's trade fixtures,
decorations, furnishings, equipment and personal property). 
Such automobile liability insurance shall be in an amount not less
than One Million Dollars ($1,000,000) for each accident.  Such
worker's compensation insurance shall carry minimum limits as
defined by the law of the jurisdiction in which the Building is
located (as the same may be amended from time to time).  Such
employer's liability insurance shall be in an amount not less than
One Million Dollars ($1,000,000) for each accident, One Million
Dollars ($1,000,000) disease-policy limit, and One Million Dollars
($1,000,000) disease-each employee.

All such insurance shall:  (1) be issued by a company that
is licensed to do business in the jurisdiction in which the
Building is located, that has been approved in advance by Landlord
and that has a rating equal to or exceeding A:IX from Best's
Insurance Guide; (2) with respect to insurance required
pursuant to Sections 13.3(a)(1) and 13.3(a)(3), name
Landlord, the managing agent of the Building and the holder of any
mortgage (as defined in Section 21.1) as additional insureds
and/or loss payees (as applicable); (3) contain an endorsement that
such policy shall remain in full force and effect notwithstanding
that the insured may have waived its right of action against any
party prior to the occurrence of a loss; (4) provide that the
insurer thereunder waives all right of recovery by way of
subrogation against Landlord, its partners, agents, employees,
representatives and mortgage holders and all trustees and
beneficiaries with respect thereto, in connection with any loss or
damage covered by such policy; (5) be acceptable in form and
content to Landlord; (6) be primary and noncontributory; (7)
insurer shall endeavor to give Landlord thirty (30) days' prior
written notice (by certified or registered mail, return receipt
requested) of any cancellation, failure to renew, reduction of
amount of insurance or change in coverage; and (8) contain a
commercially reasonable deductible provision.  Landlord
reserves the right from time to time to require Tenant to obtain
higher minimum amounts of insurance; provided such higher amounts
do not exceed the amounts then being required by landlords of
comparable office buildings in the Market Area.  If Tenant is
performing the Leasehold Work (as defined in Exhibit B),
Tenant shall deliver a certificate of all such insurance and
receipts evidencing payment therefor (and, upon request, copies of
all required insurance policies, including endorsements and
declarations) to Landlord not less than thirty (30) days prior to
the commencement of the Leasehold Work and at least annually
thereafter.  If Landlord is performing the Leasehold Work,
Tenant shall deliver a certificate of all such insurance and
receipts evidencing payment therefor (and, upon request, copies of
all required insurance policies, including endorsements and
declarations) to Landlord not less than thirty (30) days prior to
the Lease Commencement Date (as estimated by Landlord) and at least
annually thereafter.

Tenant hereby waives and releases Landlord and the holder of
any mortgage from any and all liabilities, claims and losses for
which Landlord is or may be held liable to the extent Tenant either
is required to maintain insurance pursuant to this Article
XIII or receives insurance proceeds on account thereof. 
Landlord hereby waives and releases Tenant from any and all
liabilities, claims and losses for which Tenant is or may be held
liable to the extent Landlord either is required to maintain
insurance pursuant to this Article XIII or receives
insurance proceeds on account thereof.  Both parties shall
secure waiver of subrogation endorsements from their respective
insurance carriers as to the other party.

SERVICES AND UTILITIES

Landlord shall furnish to the Premises year-round ventilation
and air conditioning and heat during normal hours of operation of
the Building, as hereinafter provided, during the seasons when such
utilities are required.  The Base Building HVAC system was
designed to provide heating and cooling in accordance with the
specifications attached hereto as Exhibit G and Landlord
shall use commercially reasonable efforts to operate the Base
Building HVAC system in accordance with such specifications. 
Landlord shall also provide reasonably adequate electricity as set
forth in Schedule I to Exhibit B, hot and cold water,
and exterior window-cleaning service as set forth in Exhibit
F.  Landlord shall further provide char and janitorial
service (after 6:00 p.m.) on Monday through Friday only, excluding
legal holidays, in accordance with the specifications attached
hereto as Exhibit F.  Landlord will also provide a fire
and life safety system as set forth in Schedule I to
Exhibit B and elevator service; provided, however, that
Landlord shall have the right to remove elevators from service as
may be required for moving freight, or for servicing or maintaining
the elevators or the Building.  Landlord or one of its
affiliates shall manage the Building and the Land, and all services
and utilities shall be provided, in accordance with standards
customarily provided in first-class office buildings of comparable
size and age in the Market Area.  Landlord shall maintain an
on-site (i.e., within the Complex) property management
office (including a property manager, assistant property manager,
and a sufficient number of engineers to provide the services
required pursuant to this Lease).  At least one elevator cab
shall be available for use by Tenant at all times.  The normal
hours of operation of the Building HVAC services will be 7:30 a.m.
to 7:00 p.m. on Monday through Friday (except legal holidays) and
8:00 a.m. to 2:00 p.m. on Saturday (except legal holidays). 
There will be no normal hours of operation of the Building HVAC
services on Sundays or legal holidays, and Landlord shall not be
obligated to maintain or operate the Building at such times unless
special arrangements are made by Tenant.  As of the date of
this Lease, the legal holidays observed by Landlord are the dates
on which the federal government observes New Year's Day, Martin
Luther King Day, Washington's Birthday (President's Day), Memorial
Day, Independence Day, Labor Day, Columbus Day, Veteran's Day,
Thanksgiving Day and Christmas Day; provided, however, that
Landlord retains the right to increase or to decrease the legal
holidays which it observes, provided such holidays are observed by
the federal government and by other comparable buildings in the
Market Area.  The services and utilities required to be
furnished by Landlord, other than electricity and water, will be
provided only during the normal hours of operation of the Building,
except as otherwise specified herein.  It is agreed that if
Tenant requires air conditioning or heat beyond the normal hours of
operation set forth herein, Landlord will furnish such air
conditioning or heat, provided Tenant gives Landlord's agent
sufficient advance notice of such requirement and Tenant agrees to
pay for the cost of such extra service in accordance with
Landlord's then current schedule of costs and assessments for such
extra service (which schedule shall reflect Landlord's direct and
indirect cost to provide the same, without additional
markup).  If such extra service is required on a business day,
sufficient notice for purposes of the preceding
sentence shall be deemed to include notice given no later than 3:00
p.m. on the applicable business day, and if such extra service is
required on weekends or holidays, then sufficient notice shall be
deemed to include notice given no later than 3:00 p.m. on the
business day immediately preceding the applicable Saturday, Sunday
or holiday.  Landlord agrees to provide an
access-control system in the Building comparable to systems in
first-class office buildings in the Market Area, which shall permit
Tenant to have access to the Premises on a 24-hour,
seven-days-a-week basis (except in the event of emergency). 
Tenant shall be provided access to the Building’s loading
docks and freight elevator in accordance with reasonable rules and
procedures established by Landlord.

It is understood and agreed that Landlord shall not have any
liability to Tenant whatsoever as a result of Landlord's failure or
inability to furnish any of the utilities or services required to
be furnished by Landlord hereunder, whether resulting from
breakdown, removal from service for maintenance or repairs,
strikes, scarcity of labor or materials, acts of God, governmental
requirements, or any other cause whatsoever.  Notwithstanding
the preceding sentence, Landlord shall not be relieved of its
obligations under Section 8.3.  It is further agreed
that any such failure or inability to furnish the utilities or
services required hereunder shall not be considered an eviction,
actual or constructive, of the Tenant from the Premises, and shall
not entitle Tenant to terminate this Lease or to an abatement of
any rent payable hereunder, except as provided in Section
14.4 below.

Subject to applicable regulatory prohibitions, the Building
shall contain a fitness facility (subject to reasonable rules and
regulations applicable to all Building tenants) of approximately
one thousand five hundred (1,500) square feet, or more.  The
fitness facility shall be available to Tenant's employees who work
in the Building on a regular basis on a non-exclusive first-come,
first-served basis.  The fitness facility shall be equipped
with contemporary exercise equipment, locker rooms, and
showers.  Such use shall be at no separate charge to Tenant or
its employees during the Lease Term (as the same may be extended);
provided, however, Landlord may charge reasonable fees for services
or extra amenities that may be available including, but not limited
to, towel service, reserved lockers, and personal training. 
Landlord currently does not intend to provide any of the additional
services specified in the preceding sentence.  Except as
otherwise provided in Section 15.2, Landlord shall not
be liable to Tenant or any of its employees or others for injuries
received by such parties while using the fitness facility. 
Landlord may specifically condition the use of the fitness facility
by any person upon such person's execution of a written waiver and
release holding Landlord harmless from any and all liability,
damage, expense, cause of action, suit, claim, judgment and cost of
defense arising from injury to such employee or guest occurring in
the fitness facility or resulting from the use thereof.

Notwithstanding the provisions of Section 14.2 to the
contrary, if (i) the services described in Section 14.1 to
be provided by Landlord are interrupted for (x) a period of more
than five (5) consecutive business days as a result of Landlord's
(or its agents', contractors’ or employees') negligence or
willful misconduct, or (y) a period of more than eight (8)
consecutive business days (for any reason other than Tenant's (or
its agents or employees) negligence or willful misconduct), (ii)
[intentionally deleted], (iii) such interruption is not the result
of any negligence or willful misconduct of Tenant or its Invitees,
and (iv) such interruption renders all or a substantial portion of
the Premises untenantable by Tenant and the Premises or such
portion thereof are not used by Tenant, then, as Tenant's sole and
exclusive remedy therefor, Tenant shall be entitled to a pro rata
abatement of rent beginning on the sixth (6th)
consecutive business day or the ninth (9th) consecutive business
day, respectively (or any such earlier date to the extent Landlord
receives rent loss insurance proceeds therefor), that the Premises
are unusable (and not used) and continuing until the Premises or
such portion thereof are rendered tenantable.  The aforesaid
condition that the interruption not be the result of any negligence
or willful misconduct of Tenant shall be waived to the extent
Landlord receives rent loss insurance proceeds covering the amount
of the rent abatement.  Notwithstanding anything in this Lease
to the contrary, the five and eight-business day periods set forth
in this Section 14.4 shall not be subject to further
extension as would otherwise be permitted by Section
25.18.

The parties hereto agree to comply with all mandatory and
voluntary energy conservation controls and requirements applicable
to office buildings that are imposed or instituted by the Federal,
state or local governments, including without limitation, controls
on the permitted range of temperature settings in office buildings,
and requirements necessitating curtailment of the volume of energy
consumption or the hours of operation of the Building.  Any
terms or conditions of this Lease that conflict or interfere with
compliance with such controls or requirements shall be suspended
for the duration of such controls or requirements.  It is
further agreed that compliance with such controls or requirements
shall not be considered an eviction, actual or constructive, of the
Tenant from the Premises and shall not entitle Tenant to terminate
this Lease or to an abatement of any rent payable hereunder.

Tenant shall reimburse Landlord for any excess water usage in
the Premises.  "Excess water usage" shall mean the
material excess of Tenant's water usage during any billing period
for water services over the estimated average water usage during
the same period for all office tenants of the Building (excluding
Tenant), as reasonably computed by Landlord.  Water usage in
any cafeteria serving the Premises shall be separately metered at
Tenant’s expense, and shall be paid for by Tenant in the same
manner and subject to similar terms and conditions as apply to
separately metered electricity pursuant to Section 4.8
hereof.  Similarly, Tenant shall reimburse Landlord for any
excess usage of supplemental condenser water, defined as usage in
excess of Tenant’s pro rata share thereof, based on the
capacity specified in Schedule I to Exhibit B hereof,
which excess usage shall be paid for by Tenant in the same manner
and subject to similar terms and conditions as apply to excess
water usage and electricity usage pursuant to Section 4.8
hereof.  Notwithstanding any of the foregoing to the contrary,
no other tenant of the Building shall be permitted to utilize
excess water or to exceed its pro rata share of the condenser water
capacity of the Building without submetering or checkmetering or
otherwise paying for such excess usage, nor shall any other tenant
otherwise be granted more favorable rights with respect to paying
for excess water usage, unless Tenant is afforded comparable such
rights.

Subject to availability as reasonably determined by Landlord,
and to such reasonable rules, regulations and conditions as
Landlord may impose, Landlord shall permit Tenant to use
Tenant’s proportionate share of space in the Building risers
and plenums for any cabling, conduits and wiring (collectively
“cabling”) necessary in connection with
Tenant’s operations in the Premises.  At
Landlord’s option, upon written notice to Tenant, at the
expiration or sooner termination of this Lease, (a) such cabling
shall be surrendered with the Premisesin its
then “as is” condition, but lien-free, or (b)
Tenant shall remove such cabling only from the Building conduits
and risers at its cost and expense and repair any damage to the
Premises or the Building, or (c) Landlord may remove such cabling
only from the Building conduits and risers and repair any damage to
the Premises or the Building on Tenant’s behalf, and Tenant
shall be responsible for the cost and expense thereby
incurred.

LIABILITY OF LANDLORD

Subject to the last sentence of this Section 15.1,
Landlord shall not be liable to Tenant, its employees, agents,
business invitees, licensees, customers, clients, family members or
guests for any damage, injury, loss, compensation or claim,
including but not limited to claims for the interruption of or loss
to Tenant's business, based on, arising out of or resulting from
any cause whatsoever, including but not limited to the
following:  repairs to any portion of the Premises or the
Building; interruption in the use of the Premises; any accident or
damage resulting from the use or operation (by Landlord, Tenant or
any other person or persons) of elevators, or of the heating,
cooling, electrical or plumbing equipment or apparatus; the
termination of this Lease by reason of the destruction of the
Premises or the Building; any fire, robbery, theft, mysterious
disappearance or any other casualty; the actions of any other
tenants of the Building or of any other person or persons; and any
leakage in any part or portion of the Premises or the Building, or
from water, rain or snow that may leak into, or flow from, any part
of the Premises or the Building, or from drains, pipes or plumbing
fixtures in the Building.  Any goods, property or personal
effects stored or placed by Tenant or its employees in or about the
Premises or the Building shall be at the sole risk of Tenant, and
Landlord shall not in any manner be held responsible
therefor.  It is understood that the employees of Landlord are
prohibited from receiving any packages or other articles delivered
to the Building for Tenant, and if any such employee receives any
such package or articles, such employee shall be acting as the
agent of Tenant for such purposes and not as the agent of Landlord.
  Notwithstanding the foregoing provisions of this Section
15.1 to the contrary but subject to the provisions of
Section 13.4, Landlord shall not be released from liability
to Tenant for damage or injury caused by (i) the negligence or
willful misconduct of Landlord or Landlord’s employees,
agents or contractors in connection with the routine maintenance
and operation of the Building, or (ii) the gross negligence of
Landlord or Landlord’s employees, agents or contractors in
connection with the provision of maintenance or services requested
by Tenant; provided, however, in no event shall Landlord have any
liability to Tenant for any claims based on the interruption of or
loss to Tenant's business or for any indirect losses or
consequential damages whatsoever or for claims for which Tenant is
insured or required under this Lease to be insured.

        Tenant hereby agrees
to indemnify and hold Landlord harmless from and against all costs,
damages, claims, liabilities and expenses (including reasonable
attorneys' fees and any costs of litigation) suffered by or claimed
against Landlord, directly or indirectly, based on, arising out of
or resulting from (i) Tenant's or its Invitees’ construction,
installation or use of the Communications Equipment (as defined in
Section 27.1), the conduits to connect the Premises to the
Communications Equipment and/or the Generator, except to the extent
Landlord is liable therefor pursuant to the last sentence of
Section 15.1 above, (ii) any accident, injury or damage
whatsoever caused to any person, or to the property of any person,
occurring in the Premises during the Lease Term, except to the
extent Landlord is liable therefor pursuant to the last sentence of
Section 15.1 hereof, (iii) the negligence or willful
misconduct of Tenant or its employees, contractors, agents,
licensees, or invitees, (iv) solely in connection with the use
or occupancy of the fitness facility, any willful misconduct or
negligent act or negligent omission to act by Tenant’s
Invitees, (v) any breach or default by Tenant in the performance or
observance of its covenants or obligations under this Lease, (vi)
the towing of any car or other vehicle as provided in Section
24.3 hereof, or (vii) any cessation or shortages of electrical
power or any other systems failure arising from Tenant's use of the
conduits to connect the Premises to the Communications Equipment;
provided, however, that Tenant’s obligation to indemnify
Landlord pursuant to Section 15.2(a)(v) shall be applicable
and enforceable only to the extent that Landlord has suffered an
actual and demonstrable loss directly caused by the breach or
default by Tenant in the performance or observance of its covenants
or obligations under this Lease; and provided, however, that in no
event shall Tenant have any liability to Landlord under this
Section 15.2(a) for any indirect losses or consequential
damages whatsoever or for claims for which Landlord is insured or
required under this Lease to be insured.  For purposes of
clause (iv) above, “Invitees” shall include only those
persons whose entry into the fitness facility was authorized by
Tenant or its employees, agents or contractors.  Any such
person shall be deemed to be authorized by Tenant if access to such
area was gained via a card key or other access device that was
issued to (or used by) Tenant or its employees, agents or
contractors.

      Landlord hereby agrees to
indemnify and hold Tenant harmless from and against all costs,
damages, claims, liabilities and expenses (including reasonable
attorney's fees and costs of litigation) suffered by or claimed
against Tenant, directly or indirectly, based on, arising out of or
resulting from (i) any accident, injury or damage whatsoever caused
to any person, or the property of any person, on or about the
common or public areas of the Building within Landlord's exclusive
control during the Lease Term (Landlord and Tenant agreeing that
all of the common and public areas of the Building shall be deemed
to be within Landlord’s exclusive control except if and to
the extent Landlord has granted another party a license for or
exclusive right to use any portion of the common or public areas of
the Building), (ii) Landlord's failure to comply with applicable
Legal Requirements (including as required by
Section 6.4) with which Landlord is required to
comply , or (iii) any breach or default by Landlord in the
performance or observance of its covenants or obligations under
this Lease; except that Landlord's obligation to indemnify Tenant
pursuant to Sections 15.2(b)(ii) and (iii) above shall be
applicable and shall be enforceable only to the extent that Tenant
has suffered an actual and demonstrable loss directly caused by the
breach or default by Landlord in the performance or observance of
its covenants or obligations under this Lease; and provided,
however, that in no event shall Landlord have any liability to
Tenant for claims based on the interruption of or loss to Tenant's
business or for any indirect losses or consequential damages
whatsoever or for claims for which Tenant is insured or required
under this Lease to be insured.  Notwithstanding anything to
the contrary in this Section 15.2(b) or elsewhere in this
Lease, this Section 15.2(b) shall not apply to the holder of
any mortgage or deed of trust secured by the Building if such
holder acts as landlord under this Lease or otherwise owns or holds
title to the Building by foreclosure or deed-in-lieu of
foreclosure.

In the event that at any time Landlord shall sell or transfer
title to the Building, provided the purchaser or transferee assumes
the obligations of Landlord hereunder arising from and after the
date of the transfer, the Landlord named herein shall not be liable
to Tenant for any obligations or liabilities based on or arising
out of events or conditions occurring on or after the date of such
sale or transfer.  Furthermore, Tenant agrees to attorn to any
such purchaser or transferee upon all the terms and conditions of
this Lease.

In the event that at any time during the Lease Term Tenant
shall have a claim against Landlord, Tenant shall not have the
right to deduct the amount allegedly owed to Tenant from any rent
or other sums payable to Landlord hereunder, it being understood
that Tenant's sole remedy for recovering upon such claim shall be
to institute an independent action against Landlord.

Tenant agrees that in the event Tenant is awarded a money
judgment against Landlord, Tenant's sole recourse for satisfaction
of such judgment shall be limited to execution against the estate
and interest of Landlord in the Building, including rents,and any undistributed
insurance proceeds that were not applied as required by this Lease,
condemnation awards, and net proceeds resulting from a sale or
refinancing of the Building.  In no event shall any other
assets of Landlord, any partner of Landlord, the holder of any
mortgage (or anyone claiming by through or under such holder) or
any other person or entity be available to satisfy, or be subject
to, such judgment, nor shall any partner of Landlord or any such
other person or entity be held to have any personal liability for
satisfaction of any claims or judgments that Tenant may have
against Landlord or any partner of Landlord in such partner's
capacity as a partner of Landlord. 

RULES AND REGULATIONS

Tenant and its agents, employees, invitees, licensees,
customers, clients, family members, guests and permitted subtenants
shall at all times abide by and observe the rules and regulations
attached hereto as Exhibit C.  In addition, Tenant and
its agents, employees, invitees, licensees, customers, clients,
family members, guests and permitted subtenants shall abide by and
observe all other reasonable rules or regulations that Landlord may
promulgate from time to time for the operation and maintenance of
the Building, provided that notice thereof is given to Tenant and
such rules and regulations are not inconsistent with the provisions
of this Lease.  Nothing contained in this Lease shall be
construed as imposing upon Landlord any duty or obligation to
enforce such rules and regulations, or the terms, conditions or
covenants contained in any other lease, as against any other
tenant, and Landlord shall not be liable to Tenant for the
violation of such rules or regulations by any other tenant or its
employees, agents, business invitees, licensees, customers,
clients, family members or guests.  Landlord shall use
reasonable efforts to enforce all such rules and regulations,
including any exceptions thereto, uniformly and in a manner which
does not unreasonably discriminate against Tenant, or increase
Tenant's monetary obligations under this Lease, although it is
understood that Landlord may grant exceptions to such rules and
regulations in circumstances in which it reasonably determines such
exceptions are warranted.  If there is any inconsistency
between this Lease and the Rules and Regulations set forth in
Exhibit C, this Lease shall govern.

DAMAGE OR DESTRUCTION

If, during the Lease Term, the Premises or the Building are
totally or partially damaged or destroyed from any cause, thereby
rendering the Premises totally or partially inaccessible or
unusable, Landlord shall diligently (taking into account the time
necessary to effectuate a satisfactory settlement with any
insurance company involved) restore and repair the Premises and the
Building to substantially the same condition they were in prior to
such damage; provided, however, if in the sole but not unreasonable
judgment of Landlord the repairs and restoration cannot be
completed within one hundred eighty (180) days after the occurrence
of such damage, including the time needed for removal of debris,
preparation of plans and issuance of all required governmental
permits, Landlord shall promptly notify Tenant of such
determination.  For a period of forty-five (45) days after the
date of Landlord’s notice, Landlord and Tenant shall each
have the right to terminate this Lease by providing written notice
to the other.  If neither party elects to terminate this Lease
within such forty-five (45) day period, Landlord shall proceed to
repair and restore the Premises (including the means of access
thereto) and the Building.  Notwithstanding the foregoing,
Tenant shall not have the right to terminate this Lease if the
negligence or willful misconduct of Tenant, or any of its
employees, agents, licensees, subtenants, customers, clients,
family members or guests, shall have caused the damage or
destruction.

[Intentionally Deleted.]

If this Lease is terminated pursuant to Section 17.1
above, all rent payable hereunder shall be apportioned and paid to
the date of the occurrence of such damage, and Tenant shall have no
further rights or remedies as against Landlord pursuant to this
Lease, or otherwise.   If this Lease is not terminated as
a result of such damage, and provided that such damage was not
caused by the negligence or willful misconduct of Tenant, or any of
its employees, agents, licensees, subtenants, invitees, customers,
clients, family members or guests, then, until the repair and
restoration of the Premises is completed Tenant shall be required
to pay annual base rent and additional rent only for that part of
the Premises that Tenant has elevator access to and is able to use
for its business while repairs are being made, based on the ratio
that the amount of usable Rentable Area bears to the total Rentable
Area of the Premises.  If this Lease is not terminated as a
result of such damage, and such damage was caused by negligence or
willful misconduct of Tenant, or any of its employees, agents,
licensees, subtenants, invitees, customers, clients, family members
or guests, then, until the repair and restoration of the Premises
is completed Tenant shall be required to pay annual base rent and
additional rent (a) for that part of the Premises that Tenant has
elevator access to and is able to use for its business while
repairs are being made (based on the ratio that the amount of
usable Rentable Area bears to the total Rentable Area of the
Premises), and (b) except to the extent Landlord receives proceeds
from any rent loss insurance in connection therewith, for that part
of the Premises that Tenant is not able to use while repairs are
being made (based on the ratio that the amount of such Rentable
Area bears to the total Rentable Area of the Premises). 
Landlord shall bear the costs and expenses of repairing and
restoring the Premises utilizing the proceeds of Landlord’s
and Tenant’s insurance (covering damage to the Building and
to the Premises, respectively), except that if such damage or
destruction was caused by the act or omission to act of Tenant, of
any of its employees, agents, licensees, subtenants, invitees,
customers, clients, family members or guests, upon written demand
from Landlord, Tenant shall pay to Landlord the amount by which
such costs and expenses exceed the insurance proceeds, if any,
received by Landlord on account of such damage or
destruction.  Provided, however, that Landlord shall not be
obligated to restore the Premises or the Building if (i) the destruction was not caused by an insurable event,
or (ii) the estimated cost of such restoration, as
determined by Landlord's architect, exceeds the amount of insurance
proceeds available to Landlord for such restoration(or which would have been available to Landlord had
Landlord maintained standard extended coverage insurance
policies in an amount equal to 100% of the replacement cost of the
Building), in which event, Landlord shall promptly notify Tenant of
such determination.

If Landlord repairs and restores the Premises as provided in
this Article XVII, Landlord shall not be required to repair
or restore any decorations, alterations or improvements to the
Premises previously made by or at the expense of Tenant nor any of
the trade fixtures, furnishings, equipment or personal property
belonging to Tenant.  Tenant shall be required to repair and
restore at its sole expense all such trade fixtures, furnishings,
equipment and personal property belonging to Tenant.  For
purposes hereof, improvements made by Landlord utilizing the
Allowance hereunder shall not be deemed to have been made at the
expense of Tenant.

Notwithstanding anything to the contrary contained herein, if
(a) the Building is damaged or destroyed from any cause to such an
extent that the costs of repairing and restoring the Building would
exceed fifty percent (50%) of the replacement value of the
Building, (b) in the sole but not unreasonable judgment of Landlord
the repairs and restoration cannot be completed within one hundred
eighty (180) days after the occurrence of such damage, and (c)
Landlord terminates all other leases in the Building that Landlord
has the right to terminate, then, whether or not the Premises are
damaged or destroyed, Landlord shall have the right to terminate
this Lease by written notice to Tenant within forty-five (45) days
following such event.  This right of termination shall be in
addition to any other right of termination provided in this
Lease.

CONDEMNATION

If the whole or a substantial part (as hereinafter defined) of
the Building or the Premises, or the use or occupancy of a
substantial part of the Premises, shall be taken or condemned by
any governmental or quasi-governmental authority for any public or
quasi-public use or purpose (including a sale thereof under threat
of such a taking), then this Lease shall terminate on the date
title thereto vests in such governmental or quasi-governmental
authority, and all rent payable hereunder shall be apportioned as
of such date.  If less than a substantial part of the
Premises, or the use or occupancy thereof, is taken or condemned by
any governmental or quasi-governmental authority for any public or
quasi-public use or purpose (including a sale thereof under threat
of such a taking), this Lease shall continue in full force and
effect, but the annual base rent and additional rent thereafter
payable hereunder shall be equitably adjusted (on the basis of the
ratio of the number of square feet of rentable area taken to the
total rentable area of the Premises prior to such taking) as of the
date title vests in the governmental or quasi-governmental
authority.  For purposes of this Section 18.1, a
substantial part of the Building or the Premises shall be
considered to have been taken if more than one-third (1/3) of the
Building or more than one-fourth (1/4) of the Premises is rendered
unusable as a result of such taking.

All awards, damages and other compensation paid by the
condemning authority on account of such taking or condemnation (or
sale under threat of such taking) shall belong to Landlord, and
Tenant hereby assigns to Landlord all rights to such awards,
damages and compensation.  Tenant agrees not to make any claim
against the Landlord or the condemning authority for any portion of
such award or compensation attributable to damage to the Premises,
the value of the unexpired term of this Lease, the loss of profits
or goodwill, leasehold improvements or severance damages. 
Nothing contained herein, however, shall prevent Tenant from
pursuing a separate claim against the condemning authority for the
value of furnishings, equipment and trade fixtures installed in the
Premises at Tenant's expense and for relocation expenses, provided
that such claim does not in any way diminish the award or
compensation payable to or recoverable by Landlord in connection
with such taking or condemnation.

DEFAULT BY TENANT

In addition to those events or occurrences described in this
Lease as Events of Default, the occurrence of any of the following
shall constitute an “Event of Default” by Tenant
under the Lease:

      If Tenant shall fail to pay any
installment of annual base rent or additional rent or any other
sums required by this Lease when due and such failure shall remain
uncured for a period of five (5) business days after Landlord
notifies Tenant in writing of such failure; provided, however, that
Landlord shall not be required to give Tenant more than two (2)
such written notices in any twelve (12) month period (i.e., upon
the third failure to pay when due in any 12-month period, an Event
of Default shall occur on the date due and unpaid).

      If Tenant shall violate or fail
to perform any other term, condition, covenant or agreement to be
performed or observed by Tenant under this Lease and such violation
or failure shall continue uncured for a period of thirty (30) days
after Landlord notifies Tenant, in writing, of such violation or
failure.  If such violation or failure is not capable of being
cured within such thirty (30) day period, Tenant shall have such
additional time, up to a maximum of ninety (90) days, to cure the
same provided Tenant commences curative action within such thirty
(30) day period and proceeds diligently and in good faith
thereafter to cure such violation or failure until completion.

      If there shall be a monetary or
material non-monetary Event of Default under the Wilson Sublease as
defined in the Wilson Sublease or a default beyond any applicable
notice and cure period under the Wilson Consent.

      If an Event of Bankruptcy, as
defined in Section 20.1 of this Lease, shall occur.

If there shall be an Event of Default (even if prior to the
Tenant Occupancy Date), then the provisions of this Section shall
apply.  Landlord shall have the right, at its sole option, to
terminate this Lease.  In addition, with or without
terminating this Lease, Landlord may reenter, terminate Tenant's
right of possession and take possession of the Premises.  The
provisions of this Article shall operate as a notice to quit, and
Tenant hereby waives any other notice to quit or notice of
Landlord's intention to reenter the Premises or terminate this
Lease.  Landlord may proceed to recover possession of the
Premises under applicable Laws.  If Landlord elects to
terminate this Lease and/or elects to terminate Tenant's right of
possession, everything contained in this Lease on the part of
Landlord to be done and performed shall cease without prejudice,
however, to Tenant's liability for all base rent, additional rent
and other sums specified herein.    Landlord may
relet the Premises or any part thereof, alone or together with
other premises, for such term(s) (which may extend beyond the date
on which the Lease Term would have expired but for Tenant's
default) and on such terms and conditions (which may include any
concessions or allowances granted by Landlord) as Landlord, in its
sole and absolute discretion, may determine, but Landlord shall not
be liable for, nor shall Tenant's obligations hereunder be
diminished by reason of, any failure by Landlord to relet all or
any portion of the Premises or to collect any rent due upon such
reletting.  If there has occurred an Event of Default under
this Lease, and Landlord has either terminated this Lease or
Tenant’s right of possession hereunder, and Tenant has
vacated the Premises, then Landlord shall thereafter use reasonable
efforts to remarket the Premises and consummate market leasing
transactions.  Whether or not this Lease and/or Tenant's right
of possession is terminated or any suit is instituted, Tenant shall
be liable for any base rent, additional rent, damages or other sum
which may be due or sustained prior to such Event of Default, and
for all third-party costs, fees and expenses (including, but not
limited to, reasonable attorneys' fees and costs, reasonable
brokerage fees, expenses incurred in enforcing any of Tenant's
obligations under the Lease or in placing the Premises in
first-class rentable condition, advertising expenses, and any
market concessions or allowances granted by Landlord) incurred by
Landlord in pursuit of its remedies hereunder and/or in recovering
possession of the Premises and renting the Premises to others from
time to time plus other damages suffered or incurred by Landlord on
account of such Event of Default (including, but not limited to
late fees or other charges to the extent attributable to such Event
of Default that are incurred by Landlord under any mortgage). 
Tenant also shall be liable for additional damages which at
Landlord's election shall be either one or a combination of the
following:  (a) an amount equal to the Base Rent and
additional rent due or which would have become due from the date of
such Event of Default through the remainder of the Lease Term, less
the amount of rental, if any, which Landlord receives during such
period from others to whom the Premises may be rented (other than
any additional rent received by Landlord as a result of any failure
of such other person to perform any of its obligations to
Landlord), which amount shall be computed and payable in monthly
installments, in advance, on the first day of each calendar month
following such Event of Default and continuing until the date on
which the Lease Term would have expired but for such Event of
Default, it being understood that separate suits may be brought
from time to time to collect any such damages for any month(s) (and
any such separate suit shall not in any manner prejudice the right
of Landlord to collect any damages for any subsequent month(s)), or
Landlord may defer initiating any such suit until after the
expiration of the Lease Term (in which event such deferral shall
not be construed as a waiver of Landlord's rights as set forth
herein and Landlord's cause of action shall be deemed not to have
accrued until the expiration of the Lease Term), and it being
further understood that if Landlord elects to bring suits from time
to time prior to reletting the Premises, Landlord shall be entitled
to its full damages through the date of the award of damages
without regard to any Base Rent, additional rent or other sums that
are or may be projected to be received by Landlord upon reletting
of the Premises; or (b) an amount equal to the sum of (i) all base
rent, additional rent and other sums due or which would be due and
payable under this Lease as of the date of such Event of Default
through the end of the scheduled Lease Term, plus (ii) all expenses
of reletting (including reasonable broker and reasonable attorneys'
fees), minus (iii) any base rent, additional rent and other sums
which would be received by Landlord upon reletting of the Premises
through the expiration of the scheduled Lease Term, with allowance
for reasonably projected vacancy periods.  Such amount shall
be discounted using a discount factor equal to two and
three-fourths (2.75) percentage points above the yield of the
Treasury Note or Bill, as appropriate, having a maturity period
approximately commensurate to the remainder of the Term, and such
resulting amount shall be payable to Landlord in a lump sum on
demand, it being understood that upon payment of such final
damages, Tenant shall be released from further liability under this
Lease with respect to the period after the date of such payment,
and that Landlord may bring suit to collect any such damages at any
time after an Event of Default shall have occurred (but subject to
the effect of the applicable statute of limitations).  In the
event Landlord relets the Premises together with other premises or
for a term extending beyond the scheduled expiration of the Lease
Term, it is understood that Tenant will not be entitled to apply
any base rent, additional rent or other sums generated or projected
to be generated by either such other premises or in the period
extending beyond the scheduled expiration of the Lease Term
(collectively, the "Extra Rent") against Landlord's damages;
provided that, the term “Extra Rent” shall
exclude any rent which would have been properly allocable to the
Premises during the period prior to the expiration of the Lease
Term but for the “backloading” of rent or other
restructuring of the timing or allocation of rental payments on
non-market terms.  Similarly in proving the amount that would
be received by Landlord upon a reletting of the Premises as set
forth in clause (iii) above, Tenant shall not take into account the
Extra Rent.  The provisions contained in this Section shall be
in addition to, and shall not prevent the enforcement of, any claim
Landlord may have against Tenant for anticipatory breach of this
Lease.  Nothing herein shall be construed to affect or
prejudice Landlord's right to prove, and claim in full, unpaid rent
accrued prior to termination of this Lease.  If Landlord is
entitled, or Tenant is required, pursuant to any provision hereof
to take any action upon the termination of the Lease Term, then
Landlord shall be entitled, and Tenant shall be required, to take
such action also upon the termination of Tenant's right of
possession.

        Tenant hereby
expressly waives, for itself and all persons claiming by, through
or under it, any right of redemption, reentry or restoration of the
operation of this Lease under any present or future Law, including
without limitation any such right which Tenant would otherwise have
in case Tenant shall be dispossessed for any cause, or in case
Landlord shall obtain possession of the Premises as herein
provided.

      All rights and remedies of
Landlord set forth herein are in addition to all other rights and
remedies available to Landlord hereunder or at law or in equity
(except that no other rights of acceleration or damage computation
with respect to the types of acceleration damages described in
Section 19.2 shall be available).  All rights and
remedies available to Landlord hereunder or at law or in equity are
expressly declared to be cumulative (except that no other rights of
acceleration or damage computation with respect to the types of
acceleration damages described in Section 19.2 shall be
available).  The exercise by Landlord of any such right or
remedy shall not prevent the concurrent or subsequent exercise of
any other right or remedy.   No delay in the enforcement or
exercise of any such right or remedy shall constitute a waiver of
any default by Tenant hereunder or of any of Landlord's rights or
remedies in connection therewith.  Landlord shall not be
deemed to have waived any default by Tenant hereunder unless such
waiver is set forth in a written instrument signed by
Landlord.  If Landlord waives in writing any default by
Tenant, such waiver shall not be construed as a waiver of any
covenant, condition or agreement set forth in this Lease except as
to the specific circumstances described in such written
waiver.

      Except as otherwise set forth in
this Lease, (i) all rights and remedies of Tenant set forth herein
are in addition to all other rights and remedies available to
Tenant at law or in equity; (ii) all rights and remedies available
to Tenant hereunder or at law or in equity are expressly declared
to be cumulative; (iii) the exercise by Tenant of any such
right or remedy shall not prevent the concurrent or subsequent
exercise of any other right or remedy; and (iv) no delay in the
enforcement or exercise of any such right or remedy shall
constitute a waiver of any default by Landlord hereunder or of any
of Tenant’s rights or remedies in connection therewith. 
Tenant shall not be deemed to have waived any default by Landlord
hereunder unless such waiver is set forth in a written instrument
signed by Tenant.  If Tenant waives in writing any default by
Landlord, such waiver shall not be construed as a waiver of any
covenant, condition or agreement set forth in this Lease except as
to the specific circumstances described in such written waiver

If Landlord or Tenant shall institute proceedings against the
other and a compromise or settlement thereof shall be made, the
same shall not constitute a waiver of default or of any other
covenant, condition or agreement set forth herein, nor of any of
the rights under this Lease of the party instituting such
proceedings .  Neither the payment by Tenant of a lesser
amount than the installments of annual base rent, additional rent
or of any sums due hereunder nor any endorsement or statement on a
check or letter accompanying a check for payment of rent or other
sums payable hereunder shall be deemed an accord and satisfaction,
and Landlord may accept such check or payment without prejudice to
Landlord's right to recover the balance of such rent or other sums
or to pursue any other remedy available to Landlord.  No
re-entry by Landlord, and no acceptance by Landlord of keys from
Tenant, shall be considered an acceptance of a surrender of this
Lease.

If Tenant defaults in the making of any payment or in the doing
of any act herein required to be made or done by Tenant, then
Landlord may, but shall not be required to, make such payment or do
such act upon five (5) days’ prior written notice to Tenant,
except in an emergency, in which event no prior notice shall be
required.  If Landlord elects to make such payment or do such
act, all costs and expenses incurred by Landlord, plus interest
thereon at the rate per annum (the “Default
Rate”) which is two percent (2%) higher than the publicly
announced "prime rate" then being charged by Riggs Bank N.A., from
the date paid by Landlord to the date of payment thereof by Tenant,
shall be immediately paid by Tenant to Landlord; provided, however,
that nothing contained herein shall be construed as permitting
Landlord to charge or receive interest in excess of the maximum
legal rate then allowed by law.  The taking of such action by
Landlord shall not be considered as a cure of such default by
Tenant or prevent Landlord from pursuing any remedy it is otherwise
entitled to in connection with such default.

If Tenant fails to make any payment of base rent or of
additional rent on or before the date such payment is due and
payable, then Tenant shall pay to Landlord a late charge of three
and one-quarter percent (3.25%) of the amount of such payment;
provided, however, that Landlord shall waive such late fee the
first (1st) time in each calendar year that Tenant fails
to make a payment when due, provided that such payment is made
before the expiration of the notice and cure period set forth in
Section 19.1(a).  In addition, such payment shall bear
interest at the rate per annum which is two percent (2%) higher
than the publicly announced "prime rate" then being charged by
Riggs Bank N.A., from the sixth (6th) day following the
date such payment became due to the date of payment thereof by
Tenant; provided, however, that nothing contained herein shall be
construed as permitting Landlord to charge or receive interest in
excess of the maximum legal rate then allowed by law.  Such
late charge and interest shall constitute additional rent due and
payable hereunder with the next installment of annual base rent due
hereunder.

BANKRUPTCY

The following shall be Events of Bankruptcy under this
Lease:

      Tenant's becoming insolvent, as
that term is defined in Title 11 of the United States Code (the
"Bankruptcy Code") or under the insolvency laws of any
state, district, commonwealth or territory of the United States
(the "Insolvency Laws");

      The appointment of a receiver or
custodian for all or substantially all of Tenant property or
assets, or the institution of a foreclosure action upon any of
Tenant's real or personal property;

      The filing by Tenant of a
voluntary petition under the provisions of the Bankruptcy Code or
Insolvency Laws;

      The filing of an involuntary
petition against Tenant as the subject debtor under the Bankruptcy
Code or Insolvency Laws, which either (i) is not dismissed within
sixty (60) days of filing, or (ii) results in the issuance of an
order for relief against the debtor; or

      Tenant's making or consenting to
an assignment for the benefit of creditors or a common law
composition of creditors.

        Upon occurrence of
an Event of Bankruptcy, Landlord shall have all rights and remedies
available to Landlord pursuant to Article XIX, provided that
while a case in which Tenant is the subject debtor under the
Bankruptcy Code is pending and only for so long as Tenant or its
Trustee in Bankruptcy (hereinafter referred to as "Trustee")
is in compliance with the provisions of Section 20.2(b), (c) and
(d) below, Landlord shall not exercise its rights and remedies
pursuant to Article XIX.

      In the event Tenant becomes the
subject debtor in a case pending under the Bankruptcy Code,
Landlord's right to terminate this Lease pursuant to Section
20.2(a) shall be subject to the rights of Trustee to assume or
assign this Lease.  Trustee shall not have the right to assume
or assign this Lease unless Trustee promptly (i) cures all defaults
under this Lease, (ii) compensates Landlord for monetary
damages incurred as a result of such defaults and
(iii) provides adequate assurance of future performance on the
part of Tenant as debtor in possession or on the part of the
assignee tenant.

      Landlord and Tenant hereby agree
in advance that adequate assurance of future performance, as used
in Section 20.2(b) above, shall mean that all of the
following minimum criteria must be met:  (i) Tenant must pay
the cost of all Tenant requested services provided by Landlord,
whether directly or through agents or contractors (i.e.,
services not provided by Landlord without a special request and
additional charge therefor), in advance of the performance or
provision of such services (the foregoing being in addition to
continuing to pay Tenant’s pro rata share of Operating
Expenses in accordance with Article IV hereof); (ii) Trustee
must agree that Tenant's business shall be conducted in a
first-class manner, and that no liquidating sales, auctions, or
other non-first-class business operation shall be conducted on the
Premises; (iii) Trustee must agree that the use of the Premises as
stated in this Lease will remain unchanged and that no prohibited
use shall be permitted; (iv) Trustee must agree that the assumption
or assignment of this Lease will not violate or affect the rights
of other tenants in the Building; (v) Trustee must pay to Landlord
at the time the next monthly installment of annual base rent is due
under this Lease, in addition to such installment of annual base
rent, an amount equal to the greater of (A) the amount of the
security deposit held by Landlord immediately prior to the Event of
Bankruptcy, and (B) the monthly installments of annual base rent
and additional rent due under this Lease for the next four (4)
months under this Lease, subject to crediting and applying against
the payment due pursuant to this clause (v) any security deposit
then held pursuant hereto, said amount to be held by Landlord in
escrow, without interest, until either Trustee or Tenant defaults
in its payment of rent or other obligations under this Lease
(whereupon Landlord shall have the right to draw on such escrowed
funds) or until the expiration of this Lease (whereupon the funds
shall be returned to Trustee or Tenant); and (vi) Tenant or Trustee
must agree to pay to Landlord at any time Landlord is authorized to
and does draw on the escrow account the amount necessary to restore
such escrow account to the original level required by Section
20.2(c)(v).

      In the event Tenant is unable to
(i) cure its defaults, (ii) pay the rent due under this Lease and
all other payments required of Tenant under this Lease on time (or
within five (5) days of the due date) or (iii) meet the criteria
and obligations imposed by Section 20.2(c) above, Tenant agrees in
advance that (A) it has not met its burden to provide
reasonable assurance of prompt cure and adequate assurance of
future performance,  (B) it has therefore failed to meet
the minimum requirement for assuming this Lease, and (C) this
Lease may be terminated by Landlord in accordance with
Section 20.2(a) above.

SUBORDINATION

Subject to Tenant’s receipt of an SNDA in accordance with
Section 21.3(d) below, this Lease shall be subject and
subordinate to the lien of (i) any first mortgage that hereafter
may encumber the Building, and (ii) any second or junior mortgages
that may hereafter encumber the Building, provided the holder of
the first mortgage consents to such subordination.  As used
herein, the term "mortgage" shall include both construction
and permanent financing and shall include deeds of trust and
similar security instruments.  At any time after the execution
of this Lease, the holder of any mortgage to which this Lease is
subordinate shall have the right to declare this Lease to be
superior to the lien of such mortgage, and Tenant agrees to execute
all documents reasonably required by such holder in confirmation
thereof.

Subject to Section 21.3(d), in confirmation of the
foregoing subordination, Tenant shall, within fifteen (15) business
days after Landlord's request, execute any requisite or appropriate
certificate or other document.  If Tenant fails to execute and
deliver any such certificate or document within such fifteen (15)
business day period, Tenant hereby constitutes and appoints
Landlord as Tenant's attorney-in-fact to execute any such
certificate or other document for or on behalf of Tenant. 
Tenant agrees that in the event any proceedings are brought for the
foreclosure of any mortgage encumbering the Building, Tenant shall
attorn to the purchaser at such foreclosure sale, if requested to
do so by such purchaser and provided that such
purchaser or holder assumes the obligations of Landlord under this
Lease arising from and after the date of such transfer.
Tenant shall recognize such purchaser as the landlord under this
Lease, and Tenant waives the provisions of any statute or rule of
law, now or hereafter in effect, which may give or purport to give
Tenant any right to terminate or otherwise adversely affect this
Lease and the obligations of Tenant hereunder in the event any such
foreclosure proceeding is prosecuted or completed.  Subject to
the provisions of Section 21.3(c) and (d), Tenant agrees
that upon such attornment, such purchaser shall not (i) be bound by
any payment of annual base rent or additional rent for more than
one (1) month in advance, except prepayments in the nature of
security for the performance by Tenant of its obligations under
this Lease, but only to the extent such prepayments have been
delivered to such purchaser, (ii) be bound by any amendment of this
Lease made without the consent of any lender of which Tenant has
notice providing construction or permanent financing for the
Building, (iii) be liable for damages for any act or omission of
any prior landlord, except for acts or omissions of a continuing
nature, as to which such purchaser shall be liable only for damages
first arising after attornment; provided that such purchaser shall
not be liable for any Landlord obligations to fund allowances or
any damages for failure to do the same, whether such obligations
first arise before or after attornment; (iv) be subject to any
offsets or defenses which Tenant might have against any prior
landlord; provided, however, that after succeeding to Landlord's
interest under this Lease, such purchaser shall perform in
accordance with the terms of this Lease and shall be liable for all
obligations of Landlord arising or continuing unfulfilled after the
date such purchaser acquires title to the Building provided such
liability shall be limited and shall exclude certain landlord
obligations, as provided in clause (iii) above; and (v) be
obligated under any provision of this Lease setting forth terms of
indemnification by Landlord of Tenant (but the limitation in this
clause (v) shall apply only to the mortgagee or its affiliate, not
to any unaffiliated, third-party purchaser at foreclosure). 
Upon request by such purchaser, Tenant shall execute and deliver an
instrument or instruments confirming its attornment, subject to
Section 21.3(d).

        After receiving
notice from any person, firm or other entity that it holds a
mortgage, deed of trust or ground lease on the Building, or the
land on which the Building is situated, no notice from Tenant to
Landlord alleging any default by Landlord shall be effective unless
and until a copy of the same is given to such holder, trustee or
ground lessor; provided, however, that Tenant shall have been
furnished with the name and address of such holder, trustee or
ground lessor.  The curing within the timeframes allotted
under Section 21.3(b) below of any of Landlord's defaults by such
holder, trustee or ground lessor shall be treated as performance by
Landlord.

      In addition to the time afforded
the Landlord for the curing of any default, any such holder,
trustee, or ground lessor shall have (i) at least an additional
thirty (30) days to cure the default if it is non-monetary and an
additional fifteen (15) days if it is a monetary default, (ii) if
such non-monetary default cannot reasonably be cured within such
thirty (30) day period, but curative action is commenced during
such thirty (30)-day period and diligently pursued to completion,
such additional time as may be necessary given the nature and
extent of the default (not to exceed an additional one hundred
eighty (180) days), and (iii) if the default cannot reasonably be
cured without such holder having obtained possession of the Land
and Building, then the periods set forth in clauses (i) and (ii)
shall be in addition to such time as may be necessary in order to
foreclose the mortgage or deed of trust and obtain possession of
the Land and Building.

      In the event that any lender
providing construction or permanent financing or any refinancing
for the Building requires, as a condition of such financing, that
ministerial or immaterial modifications to this Lease be obtained,
and provided that such modifications (i) are reasonable, (ii) do
not adversely affect Tenant's rights, benefits or use of the
Premises as herein permitted, (iii) do not increase the rent
and other sums to be paid by Tenant hereunder, and (iv) do not
diminish any of Tenant's other rights under this Lease or increase
Tenant's other obligations or liabilities under this Lease,
Landlord may submit to Tenant a written amendment to this Lease
incorporating such required changes, and Tenant hereby covenants
and agrees to execute, acknowledge and deliver such amendment to
Landlord within fifteen (15) days of Tenant's receipt thereof.

      Landlord shall obtain from the
holder of any mortgage or deed of trust previously or hereafter
placed on the Building a non-disturbance agreement (an
“SNDA”) on such holder’s standard form (or
on any other form or with such changes to such holder’s form
as may be acceptable to Tenant and such holder) in favor of Tenant
to the end and intent that as long as Tenant is not in default
hereunder beyond any applicable notice and cure period, the terms
and conditions of this Lease shall continue in full force and
effect and Tenant’s possession, use and occupancy of the
Premises shall not be disturbed during the term of this Lease by
the holder of such mortgage or deed of trust or by any purchaser
upon foreclosure of such mortgage or deed of trust.  To
satisfy the requirements of this Section 21.3(d), the final
form of any such SNDA must be a market SNDA, taking into account
the square footage, tenant, and other terms of this Lease.

HOLDING OVER

In the event that Tenant shall not immediately surrender the
Premises or any portion thereof on the date of the expiration or
earlier termination of the Lease Term with respect to the Premises
or any portion thereof, Tenant shall become a tenant by the month
at a base rent and additional rent equal to one hundred fifty
percent (150%) of the amount of the annual base rent and all
additional rent in effect during the last month of the Lease
Term.  Said monthly tenancy shall commence on the first day
following the expiration of the Lease term.  As a monthly
tenant, Tenant shall be subject to all the terms, conditions,
covenants and agreements of this Lease.  Tenant shall give to
Landlord at least thirty (30) days' written notice of any intention
to quit the Premises.  Tenant shall be entitled to thirty (30)
days' written notice to quit the Premises, which notice shall not
be given until the expiration of the Lease Term, unless Tenant is
in default hereunder, in which event Tenant shall not be entitled
to any notice to quit, the usual thirty (30) days' notice to quit
being hereby expressly waived.  Notwithstanding the foregoing
provisions of this Section 22.1, in the event that Tenant
shall hold over after the expiration of the Lease Term, and if
Landlord shall desire to regain possession of the Premises promptly
at the expiration of the Lease Term, then at any time prior to
Landlord's acceptance of rent from Tenant as a monthly tenant
hereunder, Landlord, at its option may forthwith take possession of
the Premises by any legal process in force in the Commonwealth of
Virginia.

If Tenant has not exercised its right to add the Wilson
Premises to the Premises pursuant to Section 1.1(d) of this
Lease and Tenant fails to surrender the Wilson Premises as required
by the Wilson Sublease, then if Wilson has not elected to renew the
term of the Wilson Lease, Landlord and Tenant agree that (i) Wilson
shall not be obligated for any holdover rent as set forth in
Section 22.1 of the Wilson Lease, and (ii) Landlord shall
have all of its rights and remedies under Section 22.1 of
this Lease with respect to the holdover of the Wilson Premises as
if Tenant were in a holdover status under this Lease; provided,
however, such holding over in the Wilson Premises shall not be
deemed to be an Event of Default under this Lease.

COVENANTS OF LANDLORD

Landlord covenants that it has the right to make this Lease for
the term aforesaid, and that if Tenant shall pay all rent when due
and punctually perform all the covenants, terms, conditions and
agreements of this Lease to be performed by Tenant, Tenant shall,
during the term hereby created, freely, peaceably and quietly
occupy and enjoy the full possession of the Premises without
molestation or hindrance by Landlord or any party claiming through
or under Landlord, subject to the provisions of Section 23.2
hereof.  Tenant acknowledges and agrees that its leasehold
estate in and to the Premises vests on the date this Lease is
executed, notwithstanding that the term of this Lease will not
commence until a future date.

Landlord hereby reserves to itself and its successors and
assigns the following rights (all of which are hereby consented to
by Tenant):  (i) to change the arrangement or location of
entrances, passageways, doors, doorways, corridors, elevators,
stairs, toilets, or other public parts of the Building, provided
such changes to not materially and adversely interfere with
Tenant’s use, access, enjoyment or occupancy of the Premises,
and provided further that the name of the Building shall be and
remain “Two Freedom Square”; (ii) to erect, use and
maintain pipes and conduits in and through the Premises (but not
exposed, except where there is an open ceiling design);  (iii)
to grant to anyone the exclusive right to conduct any particular
lawful business or undertaking in the Building subject to
Tenant’s rights under this Lease; and (iv) to grant anyone
the exclusive right from time to time on a temporary basis to use
any portion of the common public areas of the Building (provided
same does not materially, adversely affect Tenant's use of or
access to the Premises). Landlord shall use commercially reasonable
efforts to minimize any interference to the operation of
Tenant’s business in the Premises as a result of the exercise
of such rights; provided that Landlord shall not be required to
incur any additional, unusual risk, cost, or expense in connection
therewith.  Provided Landlord acts prudently and complies with
the immediately preceding sentence, Landlord may exercise any or
all of the foregoing rights without being deemed to be guilty of an
eviction, actual or constructive, or a disturbance or interruption
of the business of Tenant or of Tenant's use or occupancy of the
Premises. 

PARKING

During the Lease Term, upon the request of Tenant, Landlord
agrees to make available to Tenant and its employees and to
Tenant's permitted subtenants monthly parking permits in an amount
equal to three and one-half (3.5) monthly parking permits for each
one thousand (1,000) square feet of rentable area from time to time
contained in all above-grade portions of the Premises for the
parking of standard-sized passenger automobiles in the surface lots
to the south and southwest immediately across Market Street from
the Building, the Building parking deck, and/or parking on Block
18, as determined by Landlord (collectively, the "garage")
on a non-exclusive, unassigned, first-come, first-served
basis.  There shall be no additional charge to Tenant therefor
during the Lease Term, as the same may be extended. 
Notwithstanding anything herein to the contrary, Tenant also shall
have the right to acquire additional parking permits, as available,
for which excess spaces, if any, Landlord may charge Tenant at
Landlord's then current rate, as such rate may be amended from time
to time, and Landlord reserves the right to charge a fee for
visitor parking at any time provided it does so on a
nondiscriminatory basis.  Notwithstanding the foregoing, if
Landlord institutes a monthly parking permit system, then Landlord
does not guarantee the availability of any such additional monthly
parking permits to Tenant following the first (1st) one hundred
twenty (120) days after Landlord institutes any such system if and
to the extent that Tenant does not secure such monthly parking
permits available to it during such one hundred twenty (120) day
period and thereafter continuously maintain such
permits. 

It is understood and agreed that the garage will be operated on
a self-parking basis and that no specific parking spaces will be
allocated for use by Tenant.  Landlord reserves the right to
institute a valet parking system or other parking controls, rules
or regulations, at any time and in its sole, but reasonable,
discretion.  Each user of the garage will have the right to
park in any available parking space in accordance with regulations
of uniform applicability promulgated by Landlord or the garage
operator.  Notwithstanding anything herein to the contrary,
Landlord hereby reserves the right from time to time to designate
any portion of the garage to be used exclusively by visitors and
retail patrons to the Building or other tenants.

Tenant agrees that it and its employees shall observe
reasonable safety precautions in the use of the garage and shall at
all times abide by all rules and regulations promulgated by
Landlord or the garage operator governing its use.  Landlord
reserves the right to require that an identification or parking
sticker shall be displayed at all times in all cars parked in the
garage.  If such a parking sticker requirement shall be
instituted, any car not displaying such a sticker may be towed away
at the car owner's expense.  In addition, Landlord's and
Tenant's use of the garage shall be subject to all applicable laws
and regulations.

The garage will remain open on Monday through Friday (excluding
legal holidays) during the normal hours of operation of the
Building on such days.  Landlord reserves the right to close
the garage during periods of unusually inclement weather.  At
all times when the garage is closed, monthly permit holders shall
be afforded access to the garage by means of a magnetic card or
other procedure provided by Landlord or the garage
operator. 

It is understood and agreed that the Landlord does not assume
any responsibility for, and shall not be held liable for, any
damage or loss to any automobiles parked in the garage or to any
personal property located therein, or for any injury sustained by
any person in or about the garage.  Notwithstanding the
foregoing provisions of this Section 24.5 to the contrary,
Landlord shall not be released from liability to Tenant for damage
or injury caused by the negligence or willful misconduct of
Landlord or its employees; provided, however, in no event shall
Landlord have any liability to Tenant for (a) any claims based on
the interruption of or loss to Tenant's business, (b) any indirect
losses or consequential damages whatsoever, or (c) any claims
arising out of the criminal acts of third parties.

GENERAL PROVISIONS

Tenant acknowledges that neither Landlord nor any broker, agent
or employee of Landlord has made any representations or promises
with respect to the Premises or the Building except as herein
expressly set forth, and no rights, privileges, easements or
licenses are being acquired by Tenant except as herein expressly
set forth.

Nothing contained in this Lease shall be construed as creating
a partnership or joint venture of or between Landlord and Tenant,
or to create any other relationship between the parties hereto
other than that of landlord and tenant.

Landlord recognizes Insignia/ESG and Prospective, Inc. as the
sole brokers procuring this Lease and shall pay said brokers a
commission pursuant to a separate agreement between said brokers
and Landlord. Tenant represents and warrants to Landlord that it
has not employed or dealt with any broker, agent or finder in
carrying on the negotiations relating to this Lease other than the
brokers referred to in the preceding sentence.  Tenant shall
indemnify and hold Landlord harmless from and against any claim or
claims for brokerage or other commissions asserted by any broker,
agent or finder engaged by Tenant or with whom Tenant has dealt in
connection with this Lease other than the broker described
above.  Landlord shall indemnify and hold Tenant harmless from
and against any claim or claims for brokerage or other commissions
asserted against Tenant by any broker, agent or finder engaged by
Landlord or with whom Landlord has dealt in connection with this
Lease.

        Tenant agrees, at
any time and from time to time (but not more than two (2) times in
any calendar year, provided, however, that, such limit shall not
apply if Landlord has a legitimate business purpose for such
request), upon not less than five (5) business days' prior written
notice by Landlord, to execute, acknowledge and deliver to Landlord
a true statement in writing (i) certifying that this Lease is
unmodified and in full force and effect (or if there have been any
modifications, that the Lease is in full force and effect as
modified and stating the modifications), (ii) stating the dates to
which the rent and any other charges hereunder have been paid by
Tenant, (iii) stating whether or not, to the knowledge of Tenant,
Landlord is in default in the performance of any covenant,
agreement or condition contained in this Lease, and if so,
specifying the nature of such default, (iv) stating the address to
which notices to Tenant are to be sent, and (v) stating such other
information as Landlord, Lender or any other holder of a mortgage
secured by the Building may reasonably request on such form as
Landlord, Lender or such holder may reasonably request.  Any
such statement delivered by Tenant may be relied upon by any owner
of the Building or the land upon which it is situated, any
prospective purchaser of the Building or the land, any mortgagee or
prospective mortgagee of the Building or such land or of Landlord's
interest therein, or any prospective assignee of any such
mortgagee.  If Tenant fails to execute and deliver any such
certificate or document within such five (5) business day period,
Tenant hereby constitutes and appoints Landlord as Tenant's
attorney-in-fact to execute any such certificate or other document
for or on behalf of Tenant and all statements set forth therein
shall be deemed to be true and correct. 

      Landlord agrees, at any time and
from time to time (but not more often than once in any twelve (12)
month period), upon not less than five (5) business days' prior
written notice by Tenant, to execute, acknowledge and deliver to
Tenant a true statement in writing (i) certifying that this Lease
is unmodified and in full force and effect (or if there have been
any modifications, that the Lease is in full force and effect as
modified and stating the modifications), (ii) stating the dates to
which the rent and any other charges hereunder have been paid,
(iii) stating whether or not, to the knowledge of Landlord, Tenant
is in default in the performance of any covenant, agreement or
condition contained in this Lease, and if so, specifying the nature
of such default, and (iv) stating the address to which notices to
Landlord are to be sent.

Landlord and Tenant each hereby waive trial by jury in any
action, proceeding or counterclaim brought by either of them
against the other in connection with any matter arising out of or
in any way connected with this Lease, the relationship of landlord
and tenant hereunder, Tenant's use or occupancy of the Premises, or
any claim of injury or damage.

All notices or other communications required hereunder shall be
in writing and shall be deemed duly given if delivered in person
(with receipt therefor), or if sent by certified or registered
mail, return receipt requested, postage prepaid, or by recognized
overnight courier to the following addresses:  (i) if to
Landlord at c/o Boston Properties, Inc., 401
9th Street, N.W., Suite 700, Washington, D.C.
20004, Attention:  Regional General Counsel, with a copy to
Boston Properties, Inc., Prudential Center, 111 Huntington Avenue,
Boston, Massachusetts 02199, Attention:  General Counsel; (ii)
if to Tenant, prior to Tenant’s occupancy of the Premises, to
The Titan Corporation, 11225 Waples Mill Road, Fairfax, Virginia
22030, Attention:  Les Rose and Dean Kershaw, and after Tenant
occupies the Premises, the Premises, Attention:  Facilities
Manager, with  courtesy copies to The Titan Corporation, 3033
Science Park Drive, San Diego, California 92121, Attention: 
Director of Real Estate, and to the same address, with Attention to
General Counsel, (provided, however, that any failure to provide
such courtesy copy shall not in any way invalidate or otherwise
impair the delivery of such notice to Tenant), except that prior to
the Tenant Occupancy Date, notices to Tenant shall be sent to such
address as Tenant shall designate and inform Landlord in accordance
with this Section 25.6.  Either party may change its address
for the giving of notices by notice given in accordance with this
Section.

If any provision of this Lease or the application thereof to
any person or circumstance shall to any extent be invalid or
unenforceable, the remainder of this Lease, or the application of
such provision to persons or circumstances other than those as to
which it is invalid or unenforceable, shall not be affected
thereby, and each provision of this Lease shall be valid and
enforceable to the fullest extent permitted by law.

Feminine or neuter pronouns shall be substituted for those of
the masculine form, and the plural shall be substituted for the
singular number, in any place or places herein in which the context
may require such substitution.

The provisions of this Lease shall be binding upon, and shall
inure to the benefit of, the parties hereto and each of their
respective representatives, successors and assigns, subject to the
provisions hereof restricting assignment or subletting by
Tenant.

This Lease (and any documents or agreements required in order
for the parties to comply with the provisions of Section
25.15 below, including any release and/or escrow agreement)
contains and embodies the entire agreement of the parties hereto
and supersedes all prior agreements, negotiations and discussions
between the parties hereto.  Any representation, inducement or
agreement that is not contained in this Lease shall not be of any
force or effect.  This Lease may not be modified or changed in
whole or in part in any manner other than by an instrument in
writing duly signed by both parties hereto.

This Lease shall be governed by and construed in accordance
with the laws of the Commonwealth of Virginia, without regard to
the conflicts of laws principles.

Article and section headings are used herein for the
convenience of reference and shall not be considered when
construing or interpreting this Lease.

The submission of an unsigned copy of this document to Tenant
for Tenant's consideration does not constitute an offer to lease
the Premises or an option to or for the Premises.  This
document shall become effective and binding only upon the execution
and delivery of this Lease by both Landlord and Tenant.

Time is of the essence of each provision of this Lease.

This Lease shall not be recorded, except
that upon the request of either party, the parties agree to
execute, in recordable form, a short-form memorandum of this Lease,
which memorandum shall not contain any of the specific rental terms
set forth herein.  Such memorandum may be recorded in the land
records of Fairfax County, Virginia, and the party desiring such
recordation shall pay all recordation and subsequent release costs
and shall release such memorandum of record within five (5)
business days after the expiration or earlier termination of the
Lease.

        Except as otherwise
provided in this Lease, any additional rent owed by Tenant to
Landlord, and any cost, expense, damage, or liability shall be paid
by Tenant to Landlord no later than the later of (i) twenty (20)
days after the date Landlord notifies Tenant of the amount of such
additional rent or such cost, expense, damage or liability, or (ii)
the day the next monthly installment of annual base rent is
due.  If any payment hereunder is due after the end of the
Lease Term, such additional rent or such cost, expense, damage or
liability shall be paid by Tenant to Landlord not later than twenty
(20) days after Landlord notifies Tenant of the amount of such
additional rent or such cost, expense, damage or liability.

      Unless a different deadline is
set forth in this Lease, any payment owed by Landlord to Tenant
shall be paid to Tenant no later than thirty (30) days after the
date written request for payment is given to Landlord by
Tenant.

All of Tenant's duties and obligations hereunder, including but
not limited to Tenant's duties and obligations to pay annual base
rent, additional rent and the costs, expenses, damages and
liabilities incurred by Landlord for which Tenant is liable, shall
survive the expiration or earlier termination of this Lease for any
reason whatsoever.  Landlord's obligations to (a) pay any sums
due to Tenant under this Lease, (b) indemnify Tenant pursuant to
Section 15.2(b) with respect to events or occurrences
arising prior to the expiration of the Lease Term, (c) refund to
Tenant any Security Deposit or overpayment made by Tenant pursuant
to Article IV or Article V, and (d) any
liability that may arise under Section 15.1 prior to the
expiration of the Lease Term, shall likewise survive the expiration
or earlier termination of this Lease.

In the event either party is in any way delayed, interrupted or
prevented from performing any of its obligations under this Lease
(except, with respect to Tenant, any obligation with respect to
Exhibit B and, with respect to both parties, the obligation
to pay sums due under this Lease), and such delay, interruption or
prevention is due to fire, act of God, governmental act, action or
inaction (including, without limitation, government delays in
issuing any required building, construction, occupancy or other
permit, certificate or approval or performing any inspection or
review in connection therewith) strike, labor dispute, inability to
procure materials, or any other cause beyond such party's
reasonable control (whether similar or dissimilar), then such party
shall be excused from performing the affected obligations for the
period of such delay, interruption or prevention so long as such
party exercises due diligence in dealing with such matter.

Tenant hereby represents and warrants to Landlord that all
necessary action has been taken to enter this Lease and that the
person signing this Lease on behalf of Tenant has been duly
authorized to do so.  Landlord hereby represents and warrants
to Tenant that all necessary action has been taken to enter this
Lease and that the person signing this Lease on behalf of Landlord
has been duly authorized to do so.

[Intentionally deleted.]

[Intentionally deleted.]

Landlord and Tenant each hereby covenant and agree that each
and every provision of this Lease has been jointly and mutually
negotiated and authorized by both Landlord and Tenant; and, in the
event of any dispute arising out of any provision of this Lease,
Landlord and Tenant do hereby waive any claim of authorship against
the other party.

The term "days", as used herein, shall mean actual days
occurring, including, Saturdays, Sundays and holidays.  The
term "business days" shall mean days other than Saturdays,
Sundays and holidays.  If any item must be accomplished or
delivered hereunder on a day that it is not a business day, it
shall be deemed to have been timely accomplished or delivered if
accomplished or delivered on the next following business day.

For purposes of Section 55-218.1, Code of Virginia (1950), as
amended, Landlord's resident agent is Dave Boone, 3261 Foxmill
Road, Oakton, Virginia  22124.  For purposes of Section
55-2, Code of Virginia (1950), as amended, this Lease is and shall
be deemed to be a deed of lease.

This Lease includes and incorporates Rider No. 1 and
Exhibits A-1, A-2, A-3, A-4, A-5 and A-6, B, C, D, E, F, G, H,
I, J and K to the Lease.

RIGHT OF FIRST OFFER

Following the Lease Commencement Date, Tenant shall have the
right under this Section 26.1, at any time and from time to
time during the Lease Term, and all renewal terms hereunder, to
lease additional space on any floor of the Building (the
"Additional Space") as the same becomes available following
the vacation of such leased space by the then current tenant of
such space, subject to and in accordance with the following terms
and conditions:

      Landlord shall notify Tenant of
the availability of the Additional Space
(“Landlord’s Available Space
Notice”).

      Tenant shall have a period of
thirty (30) days following receipt of the Landlord’s
Available Space Notice to notify Landlord in writing whether Tenant
desires to lease the Additional Space.  In no event shall
Tenant have the right to lease less or more than the Additional
Space being offered.  The leasing of the Additional Space
shall be for the Market Rent equal to (i) one hundred percent
(100%) of the then prevailing fair market rent (as defined in and
determined pursuant to the provisions of Rider No. 1 attached to
this Lease), and (ii) additional rent on account of all Operating
Expenses and Real Estate Taxes incurred during the term of Tenant's
leasing of the Additional Space shall be based on a new Base Year
equal to the first twelve (12) months of the term with respect to
the Additional Space; provided, however, that notwithstanding
anything in Rider No. 1 to the contrary, (I) the change in the Base
Year as provided in (ii) first above shall be an additional factor
that shall be considered in determining the Market Rent, (II)
Landlord and Tenant shall have only twenty (20) days (in lieu of
the thirty (30)-day period provided in Rider No. 1) in which to
agree on the Market Rent pursuant to Paragraph 1(b) of Rider No. 1,
and (III) the Broker(s) shall only have thirty (30) days (in lieu
of the sixty (60)-day period provided in Rider No. 1) in which to
agree on the Market Rent pursuant to Paragraph 1(c) of Rider
No. 1.  Except as otherwise provided herein, all other terms
and conditions of this Lease shall apply to the Additional Space,
except that no concession, abatement or other allowance shall apply
with respect to the Additional Space expect as may be agreed to by
the parties in determining Market Rent.  In the event Tenant
does not timely notify Landlord that Tenant desires to lease the
Additional Space, then Tenant’s rights under this Section
26.1 with respect to such Additional space shall forever lapse
and Landlord shall be free to lease such Additional Space to any
other party on such terms and conditions as Landlord in its sole
discretion may determine.

      If Tenant leases any Additional
Space hereunder, Landlord shall deliver possession of the
Additional Space to Tenant promptly after the date on which the
Additional Space is vacated by the prior tenant thereof, and the
term of Tenant's leasing of such Additional Space (and
Tenant’s obligation to commence paying rent therefor) shall
commence on such delivery date and the term with respect to such
Additional Space shall be coterminous with the term for the initial
Premises.  Landlord shall incur no liability, and the
expiration date of the term for which the Additional Space is
leased shall not be extended, if Landlord is unable to deliver
possession of the Additional Space to Tenant due to any holdover
tenant's refusal to vacate, or for any other reason.  Landlord
agrees to use reasonable efforts to evict any such holdover tenant
and to obtain possession of the Additional Space as soon as
reasonably possible.  Any Additional Space which is leased to
Tenant shall be delivered by Landlord and accepted by Tenant in its
then-current "as is" condition.

      Notwithstanding anything in this
Section 26.1 to the contrary, if an Event of Default exists
at the time Tenant elects to lease any Additional Space, or at any
time thereafter prior to the commencement of this Lease with
respect to the Additional Space, then at Landlord's election,
Tenant shall have no right to lease the applicable Additional
Space.  If Landlord elects to rescind Tenant's right to lease
the Additional Space as set forth in the preceding sentence,
Landlord shall do so within 30 days after Tenant elects to lease
the Additional Space, or with respect to Events of Defaults arising
after Tenant's election, within 30 days after the occurrence of any
such Event of Default.

      Notwithstanding anything in this
Section 26.1 to the contrary, Tenant's rights under this
Section 26.1 are subject and subordinate to Finnegan
Henderson Farabow Garrett & Dunner, LLP’s
(“Finnegan”’s) rights to lease the
Additional Space and to the renewal rights of all other tenants in
the Building to the extent such rights exist as of the Effective
Date (i.e., the renewal rights of Finnegan, High Performance
Technologies, Inc., and Latham & Watkins).  No space in
the Building shall be deemed to be an Additional Space hereunder
unless and until it has been leased to (and occupied by) another
party as of the Effective Date.  In addition, if Tenant fails
timely to elect to add the Wilson Premises to the Premises pursuant
to Section 1.1(d), then Tenant’s rights under this
Article shall not arise with respect to any portion of the Wilson
Premises until Landlord leases such space (or any portion thereof)
to a third party on any terms and conditions which Landlord and
such tenant agree, and such space thereafter becomes
available. 

Tenant's rights under this Article XXVI are personal to
and may be exercised only by The Titan Corporation and shall not be
exercisable by any assignee or subtenant of Tenant (other than a
Permitted Transferee); provided, however, that a sublease by The
Titan Corporation shall not prevent The Titan Corporation from
exercising its rights under this Article XXVI except as
otherwise specifically set forth in this Article
XXVI. 

[Intentionally Deleted].

Promptly after Tenant elects to lease any additional rentable
area pursuant to this Article XXVI, the parties shall
execute an amendment to this Lease adding such space to the
Premises on the terms and conditions specified in this
Article.

Time is of the essence with respect to the dates by which
Tenant must elect to lease any space under this Article.  If
Tenant fails timely to elect to lease any such space (or notify
Landlord of its interest in leasing any such space, as applicable),
then Tenant’s rights with respect to such space shall
immediately lapse and expire and be of no further force or effect
and Landlord shall be free to lease such space to any other party
on such terms and conditions as Landlord in its sole discretion may
determine; provided, however, that if Landlord leases any such
space to another party and such space thereafter becomes available
for Lease to the public (i.e., the Landlord and the prior
tenant do not desire to renew or extend such tenant’s lease
of the space and such space is unencumbered by the rights of any
other party), then Tenant’s rights under this Article XXVI
shall again apply with respect to such space.

At Tenant’s request (but not more often than once each
calendar year), Landlord shall notify Tenant of the scheduled
expiration dates of the other leases in the Building over the
succeeding two (2) year period.

ROOF
RIGHTS

        Subject to the
satisfaction, in Landlord's reasonable judgment, of all of the
conditions set forth in this Section, Tenant, at Tenant's sole cost
and expense, may install telecommunications antennae and satellite
dishes and other rooftop communication equipment (collectively, the
"Communications Equipment") on the roof of the Building for
use in connection with Tenant's business in the Premises.  Not
later than June 1, 2003, Landlord and Tenant shall identify a
mutually agreeable area on the roof of the Building that reflects
the fact that Tenant is the majority tenant of the Building (as
such status may change from time to time) in which Tenant shall
have the exclusive right to use for Tenant’s Communications
Equipment.  Notwithstanding anything in this Article to the
contrary, Tenant shall not be permitted to install the
Communications Equipment unless (I) Tenant's Communications
Equipment shall not interfere with any other satellite dish or
antenna of any other tenant in the Building located on the roof at
the time Tenant installs its Communications Equipment, (II) such
Communications Equipment conforms to the specifications and
requirements set forth in the drawings and specifications prepared
by a licensed professional (the "Communications
EquipmentDrawings"), which Communications Equipment
Drawings shall be subject to the prior written approval of
Landlord, which approval shall not be unreasonably withheld,
conditioned or delayed, (III) Landlord approves, which approval
shall not be unreasonably withheld, conditioned or delayed, the
number, size, capacity, power, location and proposed placement and
method of installation of such Communications Equipment, and (IV)
Tenant obtains, at its sole cost and expense, and provides copies
to Landlord of all necessary governmental permits and approvals,
including, without limitation, special exception permits, if
applicable, for the installation of the Communications Equipment
upon the Building.  Tenant, at Landlord's direction, shall
cause the Communications Equipment to be painted in a nonmetallic
paint to match the materials on the penthouse.  In addition,
if the installation of the Communications Equipment on the roof of
the Building would penetrate the roof of the Building, then Tenant
shall  not be permitted to install the Communications
Equipment unless Tenant (i) contracts at not more than the current
market rates with Landlord’s roofing contractor to retain the
warranties and guaranties with respect to the roof, (ii) obtains
the approval of Landlord’s structural engineer, which
approval may be granted or withheld by Landlord’s structural
engineer and Landlord in their sole discretion, and (iii) pays the
cost of any structural support or alterations necessary to secure
the Communications Equipment to the Building.  The
Communications Equipment shall be installed by a contractor
reasonably acceptable to both Landlord and Tenant and thereafter
shall be properly maintained by Tenant, all at Tenant's sole
expense.  At the expiration or earlier termination of the
Lease Term, the Communications Equipment shall be removed from the
roof of the Building at Tenant's sole cost and expense and that
portion of the roof of the Building that has been affected by the
Communications Equipment shall be returned to the condition it was
in prior to the installation of the  Communications Equipment,
excluding the conduits provided for in Schedule I,
Attachment A of Exhibit B.  Tenant shall pay all
subscription fees, usage charges and hookup and disconnection fees
associated with Tenant's use of the Communications Equipment and
Landlord shall have no liability therefor.  All of the
provisions of this Lease, including, without limitation, the
insurance, maintenance, repair, release and indemnification
provisions shall apply and be applicable to Tenant's installation,
operation, maintenance and removal of the Communications
Equipment.

      Except as shown on the
Communications Equipment Drawings, as reasonably approved by
Landlord, Tenant shall not make any modification to the design,
structure or systems of the Building, required in connection with
the installation of the Communications Equipment without Landlord's
prior written approval of such modification and the plans therefor,
which approval may be granted, conditioned or withheld by Landlord
in its sole but reasonable discretion.  The preceding sentence
notwithstanding, Landlord acknowledges and agrees that Tenant may
use the conduits connecting the Premises to the roof of the
Building in conjunction with the installation of the Communications
Equipment on the roof of the Building and the connection of the
Communications Equipment to the Premises for use in Tenant's
business.  Tenant agrees that, in addition to any
indemnification provided Landlord in this Lease, Tenant shall
indemnify and shall hold Landlord and Boston Properties, Inc.,
Landlord's managing agent, and their employees, shareholders,
partners, officers and directors, harmless from and against all
costs, damages, claims, liabilities and expenses (including
attorney's fees and any costs of litigation) suffered by or claimed
against Landlord, directly or indirectly, based on , arising out of
or resulting from Tenant's use of the Communications Equipment
and/or the conduits to connect the Premises to the Communications
Equipment.  In addition, Tenant shall be liable to Landlord
for any actual damages suffered by Landlord or any other tenant or
occupant of the Building for any cessation or shortages of
electrical power or any other systems failure arising from Tenant's
use of the conduits to connect the Premises to the Communications
Equipment.

      Tenant, at its sole cost and
expense, shall secure all necessary permits and approvals from all
applicable governmental agencies with respect to the size,
placement and installation of the Communications Equipment. 
In the event Tenant is unable to obtain the necessary approvals and
permits from any applicable federal, state, county or other local
governing authorities for the Communications Equipment, Tenant
shall have no remedy, claim, cause of action or recourse against
Landlord, nor shall such failure or inability to obtain any
necessary permits or approvals provide Tenant the opportunity to
terminate this Lease.

      Landlord makes no
representations or warranties concurring the suitability of the
roof of the Building for the installation operation, maintenance
and repair of the Communications Equipment, Tenant having satisfied
itself concerning such matters.

      Tenant shall not have access to
the Communications Equipment without Landlord's reasonable prior
written consent, which consent shall be granted to the extent
necessary for Tenant’s operation, use, repair and 
maintenance of the Communications Equipment and only if Tenant is
accompanied by Landlord's representative (if Landlord so
requests).  Any such access by Tenant shall be subject to
reasonable rules and regulations relating thereto established from
time to time by Landlord, including without limitation rules and
regulations prohibiting such access unless Tenant is accompanied by
Landlord's representative.  Landlord shall use reasonable
efforts to provide immediate access to the Communications Equipment
as necessary to accommodate Tenant’s business.

      Notwithstanding anything herein
to the contrary, after at least sixty (60) days' prior written
notice to Tenant, Landlord shall have the right to require Tenant
to relocate the Communications Equipment, if such relocation (i) is
required by applicable Legal Requirements or is required in
connection with the prudent management or operation of the
Building, and (ii) no other area on the roof is sufficient to meet
Landlord’s requirements.  In such event the new location
provided for Tenant’s relocated Communications Equipment
shall be deemed thereafter to be for Tenant’s exclusive
use.  Any such relocation shall be performed by Tenant at
Landlord's expense, and in accordance with all of the requirements
of this Section.  Nothing in this Section shall be construed
as granting Tenant any line of sight easement with respect to such
Communications Equipment; provided, however, that if Landlord
requires that such Communications Equipment be relocated in
accordance with this Section 27.(f), then Landlord shall use
reasonable efforts to provide either (x) the same line of sight for
such Communications Equipment as was available prior to such
relocation, or (y) a line of sight for such Communications
Equipment which is functionally equivalent to that available prior
to such relocation.

      It is expressly understood that
by granting Tenant the right hereunder, Landlord makes no
representation as to the legality of such Communications Equipment
or its installation.   In the event that any federal, state,
county, regulatory or other authority requires the removal or
relocation of such Communications Equipment, Tenant shall remove or
relocate such Communications Equipment at Tenant's sole cost and
expense, and Landlord shall under no circumstances be liable to
Tenant therefor.

      The Communications Equipment may
be used by Tenant only in the conduct of Tenant's customary
business in the Premises.  No assignee (other than an assignee
of this Lease that is a Parent or Affiliate of
Tenant or otherwise permitted by Section 7.1(b) or
approved by Landlord under this Lease) or subtenant shall have any
rights pursuant to this Article except as approved by Landlord,
which approval shall not be unreasonably withheld, conditioned, or
delayed.  Notwithstanding anything herein to the contrary, if
any assignee or subtenant is permitted to use any Communications
Equipment or other communication equipment on the roof of the
Building, then such person or entity shall reimburse Landlord at
the market rate that Landlord would charge a third party for such
rights.

      Tenant shall maintain such
insurance as is appropriate with respect to the installation,
operation and maintenance of the Communications Equipment. 
Landlord shall endeavor to cause satellite dishes or antennae
installed on the roof subsequent to the Communications Equipment to
be installed in a manner that will not interfere with the operation
of the Communications Equipment; provided, however, that Landlord
shall have no liability on account of any damage to or interference
with the operation of the Communications Equipment except for
physical damage caused by Landlord's gross negligence or willful
misconduct and Landlord expressly makes no representations or
warranties with respect to the capacity for a Communications
Equipment placed on the roof of the Building to receive or transmit
signals.  The operation of the Communications Equipment shall
be at Tenant's sole and absolute risk.  Tenant shall in no
event interfere with the use of any other communications equipment
located on the roof of the Building.

      Except as otherwise expressly
provided for in this Article XXVII, Tenant’s right to use the
roof of the Building for the Communications Equipment shall be at
no additional cost to Tenant.

 

GENERATOR RIGHTS

Subject to the conditions and requirements of this Article
XXVIII, Tenant shall be permitted to install, free of charge, at
its sole cost and expense, a back-up power generator and all
necessary fuel tanks (if any), batteries (if any), and feeders and
conduits extending from such generator to the Premises
(collectively, the “Generator”). 

The Generator shall be placed only in a location in the
Building or on the Land to be designated by Landlord in its sole
discretion as outlined on the Site Plan attached hereto as
Exhibit A (said area is hereinafter referred to as the
"Generator Support Area").  Landlord may, in its sole
discretion, require that such area be enclosed by screening
materials designated by Landlord.  The area in which the
Generator is located shall be subject to all of the provisions of
the Lease as if it were located within the Premises including
Tenant’s obligation to obtain all governmental and other
approvals, including but not limited to the Reston Town Center
Design Review Board.  If the Generator Support Area is located
in the parking garage, then the number of parking spaces, if any,
comprising the Generator Support Area shall be deducted from the
number of parking spaces available for Tenant's use pursuant to
Article XXIV hereof.

The Generator shall be used only for backup operations during
the pendency of any power outages.  The Generator shall not be
used (a) for the benefit of any other tenant of the Complex without
Landlord’s consent, which may be granted or withheld in
Landlord’s sole but reasonable discretion or (b) for peak use
sharing or operating during business hours.

Tenant’s right to install or modify the Generator is
conditioned upon Landlord’s prior written approval of any
equipment to be installed, which approval shall be made in
Landlord’s sole, but not arbitrary, discretion.  Tenant
shall provide Landlord mechanical and electrical drawings and
specifications by a licensed professional engineer, which drawings
and specifications shall include a written description of the
Generator Equipment, including make, model, size, capacity, noise
specifications, fuel types, location of the exhaust pipe
termination points(s), specifications for exercising the generator,
the proposed routing of cables, and location of peripheral
equipment.  The initial Generator Equipment and any material
changes thereto shall be subject to Landlord’s prior
approval, which approval shall not be unreasonably withheld,
conditioned or delayed.

Construction of the Generator Support Area and installation of
(i) the Generator and (ii) any protective enclosure around the
Generator Support Area, and (ii) any conduits, feeders, equipment
areas connecting the Generator and/or the Generator Support Area to
the Premises (collectively, the "Generator Alterations"),
shall be performed pursuant to and in accordance with the plans and
specifications prepared by licensed engineers and reviewed and
approved by Landlord and, if required, its engineers, in writing
(which approval(s) shall not be unreasonably withheld, conditioned
or delayed), and the other provisions of Article IX of this
Lease.  Tenant shall repair and restore all damage caused
thereby and restore all such areas as reasonably required by
Landlord.  Tenant shall pay for, at its cost, and shall
install and perform as a part of the Leasehold Work, all required
enclosures, structural modifications to provide any necessary
additional load bearing capability, and all other reasonable
requirements of Landlord and any applicable Legal Requirements in
connection with the Generator Alterations.  Tenant will allow
Landlord’s designee to be present during the installation of
the Generator Alterations.  Tenant will not make any material
repairs or alterations to the Generator Alterations without
obtaining Landlord’s prior written consent (not to be
unreasonably withheld, conditioned or delayed, provided that any
repairs or alterations made pursuant to Tenant’s approved
service contract shall be deemed approved) and Landlord shall have
the right to disapprove any installation or alteration or require
Tenant to remove or relocate the Generator Alterations at
Landlord’s sole cost in expense in the event such
installation or alteration may void or adversely affect any
warranty affecting the Building’s systems including, without
limit, the roof.  All testing and exercising of the Generator
shall occur during other than the Complex’ normal business
hours unless Landlord determines in its reasonable discretion that
such testing and exercising during the Complex’ normal
business hours shall not disturb the other tenants of the
Complex. 

Tenant at its sole expense shall comply with all Legal
Requirements and the requirements of Landlord’s insurer with
respect to the installation, repair, maintenance or operation of
the Generator Alterations (including all ancillary
equipment).  Tenant shall at its expense obtain all permits,
variances and licenses required by Legal Requirements relating to
the Generator Alterations and shall deliver copies to
Landlord. 

Tenant’s access to and use of the Generator Support Area
shall be exclusive and Landlord shall not allow others to use such
area.  Landlord shall have the right, but not the obligation,
to enter the Generator Support Area upon reasonable advance written
notice at all reasonable times upon reasonable notice for the
purpose of inspecting the Generator Alterations or exhibiting the
Building, and only upon such notice as is practicable under the
circumstances in the event of an emergency, to make repairs.

Landlord may from time to time require Tenant to relocate the
Generator Alterations to another site to be determined by Landlord
in its sole but reasonable discretion.  In such event,
Tenant’s means of access to the Generator Alterations and
related cabling will be relocated at Landlord’s expense in a
manner so as not to unreasonably impair the availability of the
Generator as a backup power source.  If Landlord elects to
relocate the Generator Alterations, the costs shall be borne by
Landlord unless such relocation is required by Legal Requirements
in which event such costs shall be borne by Tenant.  In the
event Landlord elects to relocate the Generator Alterations, Tenant
shall be entitled to at least thirty (30) days written notice,
except in an emergency.

Tenant shall submeter all electrical usage and pay the costs of
all utilities services required for Tenant’s use of the
Generator Alterations.

The installation, repair, maintenance and operation of the
Generator Alterations will be at Tenant’s sole risk, cost and
expense.  Landlord or its agents or employees shall not be
liable for any costs or expenses caused in any manner by such
installation, repair, maintenance and operation except to the
extent caused by Landlord’s negligence or willful
misconduct.  Tenant shall promptly repair at its expense all
damage caused by or resulting from the installation, maintenance,
repair or operation of the Generator Alterations.

Upon the expiration or earlier termination of this Lease, if
Landlord so directs by ten (10) days written notice to Tenant,
Tenant shall remove the Generator Alterations (including any
cables, wires, lines,  pipes or piping installed in the
interior of the Building in connection therewith) at its sole
expense and shall repair any damage to the Building or the Premises
caused by or resulting from such removal.

Landlord makes no warranties or representations concerning the
suitability of the Generator Support Area for the installation of
the Generator, Tenant having satisfied itself concerning these
matters.

[signatures on following page]

IN WITNESS WHEREOF,
Landlord and Tenant have executed this Lease under seal on or as of
the day and year first above written.

LANDLORD:

TWO FREEDOM SQUARE,
L.L.C.

By: 
     BOSTON PROPERTIES LIMITED
                                                  
PARTNERSHIP, a Delaware limited partnership

       
By:    BOSTON PROPERTIES, INC.,

        a
Delaware corporation, its sole

 general partner

By:        /s/
RAYMOND A. RITCHEY [SEAL]

Name: Raymond A. Ritchey

Title:   Executive Vice President

                                                                          
By:    TERRABROOK TWO FREEDOM

                                                                                    
SQUARE, L.L.C., a Delaware limited

                                                                                    
liability company, member

                                                                          
By:     /s/ THOMAS A. WILLIAMSON
[SEAL]

                                                                          
Name: Thomas A. Williamson

                                                                          
Title:   Vice President

                                                                       
TENANT:

                                                                       
THE TITAN CORPORATION, a Delaware

corporation

WITNESS:

By:      
_________________                         
By:       /s/ MARK W.
SOPP

Title:    
________________                           
Name:  Mark W. Sopp

                                                                       
Title:     Chief Financial
Officer

                                                                                   
[CORPORATE SEAL]

RIDER NO.
1

THIS RIDER NO. 1 is
attached to and made a part of that certain Deed of Lease dated
  April 1, 2003 (the "Lease"), by and
between TWO FREEDOM SQUARE, L.L.C. (collectively,
"Landlord") and THE TITAN CORPORATION
("Tenant").  The terms used in this Rider which are
defined in the Lease have the same meanings as provided in the
Lease.

WITNESSETH, that for and
in consideration of Tenant's entering into the Deed of Lease
described above, and other good and valuable consideration, and
intending to be legally bound hereby, Landlord hereby grants to
Tenant the right to renew the initial term of the Lease upon the
following terms and conditions:

Landlord hereby grants to Tenant the conditional right,
exercisable at Tenant's option, to renew the term of the Lease for
one (1) additional term of ten (10) years (the "Renewal
Term").  If Tenant has elected to lease the Wilson
Premises pursuant to Section 1.1(d) of this Lease, then at
Tenant’s option, which shall be specified in Tenant’s
renewal option notice (as defined below), Tenant may elect not to
renew with respect to the Wilson Premises (and renew only with
respect to the balance of the Premises then leased pursuant to this
Lease).  If timely exercised and if the conditions applicable
thereto have been satisfied, the Renewal Term shall commence
immediately following the end of the initial term provided in
Section 3.1 of the Lease.  The right of renewal herein
granted to Tenant shall be subject to, and shall be exercised in
accordance with, the following terms and conditions:

      Tenant shall exercise its right
of renewal with respect to the Renewal Term by giving Landlord
written notice of the exercise thereof (the "renewal option
notice") within the period (the “Election
Period”) commencing on December 31, 2013 and expiring on
June 30, 2014.  In the event that the renewal option notice is
not given in a timely manner, Tenant's right of renewal with
respect to the Renewal Term shall lapse and be of no further force
or effect.  If there exists a monetary or material
non-monetary Event of Default under the Lease, on the date the
renewal option notice is given or on the day prior to the
commencement date of the Renewal Term, then, at Landlord's option,
the renewal option notice shall be totally ineffective and Tenant's
right of renewal as to the Renewal Term shall lapse and be of no
further force of effect.  If Landlord elects to rescind
Tenant's right to extend the Lease for the Renewal Term as set
forth in the preceding sentence, Landlord shall do so within 30
days after Tenant elects to extend the Lease for the Renewal Term,
or with respect to Events of Default existing on the day prior to
the commencement date of the Renewal Term, within 30 days after
such date.

      Promptly following Landlord's
timely receipt of the renewal option notice for the Renewal Term,
Landlord and Tenant shall commence negotiations concerning the
amount of annual base rent which shall be payable during each year
of the Renewal Term, it being intended that such annual base rent
shall be equal to ninety-five percent (95%) of the then prevailing
fair market rent for the Premises during the Renewal Term. 
The parties shall have thirty (30)days after Landlord's
receipt of the renewal option notice in which to agree on the
annual base rent which shall be payable during each year of the
Renewal Term and the Lease security that may be required.  The
parties shall be obligated to conduct such negotiations in good
faith.  Among the factors to be considered by the parties
during such negotiations shall be (i) the general office rental
market in the Market Area, (ii) rental rates then being obtained by
other building owners for office buildings of comparable size,
location and quality to the Building in the Market Area, (iii) the
rental rates then being obtained by Landlord for comparable office
space in "as is" condition in the Building, (iv) escalations and
passthroughs of Operating Expenses as provided in the Lease, (v)
concession packages then being given or obtained by other building
owners for office buildings in the Market Area, of comparable size,
location and quality to the Building, (vi) concession packages then
being given or obtained by Landlord for comparable office space in
the Building, (vii) the parking rights granted to Tenant under this
Lease, (viii) the location of the Premises within the Building,
(ix) whether or not Landlord shall be required to pay any
commissions in connection with the renewal, and (x) any other
criteria or factors that would fairly be taken into consideration
in determining the economics of market lease transactions in the
Market Area, including, without limitation, any cost savings
arising out of the fact that the parties are renewing an existing
lease.  Vacancy periods shall not be considered by the parties
during such negotiations.  If the parties agree on the base
rent payable during each year of the Renewal Term, they shall
promptly execute an amendment to the Lease stating the rent so
agreed upon.

      If, during such thirty (30) day
period referred to in subparagraph (b) above, the parties are
unable to agree on the base rent payable during the applicable
Renewal Term, then the fair market rent and Lease security shall be
determined in accordance with the “Three-Broker”
procedure set forth in this Paragraph 1(c).  Within ten
(10) days after expiration of such thirty (30) day period, the
parties shall appoint an independent, unaffiliated real estate
broker (“Broker”) who shall be mutually
agreeable to both Landlord and Tenant, shall be a member of the
National Association of Realtors or the Greater Washington, D.C.
Association of Realtors, and shall have at least ten (10) years
relevant experience in office rentals in the northern Virginia
market.  If the parties are unable to agree on a Broker within
such ten (10) day period, then each party, within five (5) days
after the expiration of the aforesaid ten (10) day period, shall
appoint a Broker (with the same qualifications) and the two (2)
Brokers shall together appoint a third Broker with the same
qualifications.  The Broker or Brokers so appointed then shall
determine, within sixty (60) days after the appointment of such
Broker or Brokers, the then fair market base rent for the
Premises.  Among the factors to be considered by the Broker(s)
in determining the fair market base rent for the Premises shall be
those factors set out in Paragraph 1(b) above.  The figure
arrived at by the Broker (or the average of the figures arrived at
by the three Brokers, if applicable) shall be used as the fair
market base rent for such renewal term.  If the Three Broker
method is chosen, then if any Broker's estimate of fair market base
rent is either (x) less than ninety percent (90%) of the average
figure or (y) more than one hundred ten percent (110%) of such
average, then the fair market rent will be either (1) the
average of the remaining two (2) Brokers’ figures falling
within such a range of percentages, (2) the remaining
Broker’s figure which is within such range of percentages or
(3) if none of the figures are within such range, the average of
the three (3) Brokers’ figures.  Landlord and Tenant
shall each bear the cost of its Broker and shall share equally the
cost of the third Broker.

      During the Renewal Term, all the
terms, conditions, covenants and agreements set forth in the Lease
shall continue to apply and be binding upon Landlord and Tenant,
except that (i) the annual base rent payable during each year of
the Renewal Term shall be the amount agreed upon by Landlord and
Tenant in the manner provided in Paragraphs 1(b) and 1(c)
above, (ii) in no event shall Tenant have the right to renew the
term of the Lease, or any renewal term thereof, beyond the
expiration of the Renewal Term, (iii) no abatements, allowances or
other concessions shall apply during the Renewal Term, except to
the extent otherwise agreed to by the parties in accordance with
this Rider, (iv) [intentionally deleted], and (v) additional rent
on account of all Operating Expenses and Real Estate Taxes incurred
during the Renewal Term shall be based on a new Base Year equal to
calendar year in which the Renewal Term commences.

Notwithstanding anything in the Lease or this Rider No. 1 to
the contrary, at Tenant’s option, Tenant may elect not to
renew the Lease Term as set forth in Paragraph 1 above, but rather
to extend the term of the Lease for a period of up to six (6)
months (the “Short-Term Extension Right”).
  Tenant shall exercise its Short-Term Extension Right by
giving Landlord written notice of the exercise thereof (the
"short-term extension option notice") during the
Election Period, which short-term extension option notice shall
specify the number of full calendar months (the
“Short-Term Extension Period”) by which Tenant
is electing to extend the Lease Term.  If the short-term
extension notice is not given in a timely manner, then Tenant's
Short-Term Extension Right shall lapse and be of no further force
or effect.  If there exists a monetary or material
non-monetary Event of Default under the Lease, on the date the
short-term extension option notice is given or on the day prior to
the commencement date of the Short-Term Extension Right, then, at
Landlord's option, the short-term extension option notice shall be
totally ineffective and Tenant's Short-Term Extension Right shall
lapse and be of no further force of effect.  The base rent
during the Short-Term Extension Period shall be equal to one
hundred percent (100%) of the then prevailing fair market rent (as
defined in and determined pursuant to the provisions of
Paragraph 1 above),      

Tenant's rights under this Rider No. 1 are personal to and may
be exercised only by The Titan Corporation and any assignee of The
Titan Corporation that is a Permitted Transferee and shall not be
exercisable by any other assignee or subtenant of Tenant; provided,
however, that a sublease by The Titan Corporation or any Permitted
Transferee shall not prevent The Titan Corporation or such
Permitted Transferee from exercising its rights under this Rider
No. 1.

EXHIBIT A

SITE PLAN (INCLUDING LOCATION OF THE GENERATOR
SUPPORT AREA)

EXHIBIT A-1

DIAGRAM OF PREMISES LOCATED ON TENTH
FLOOR

EXHIBIT A-2

DIAGRAM OF PREMISES LOCATED ON THE SIXTH
FLOOR

EXHIBIT A-3

DIAGRAM OF PREMISES LOCATED ON FOURTH
FLOOR

EXHIBIT A-4

DIAGRAM OF PREMISES LOCATED ON THIRD
FLOOR

EXHIBIT A-5

DIAGRAM OF PREMISES LOCATED ON SECOND FLOOR

EXHIBIT A-6

DIAGRAM OF PREMISES LOCATED ON THE RETAIL
LEVEL

EXHIBIT
A-7

DIAGRAM
OF PREMISES LOCATED ON THE C-1 (CONCOURSE) LEVEL

EXHIBIT
B

WORK
AGREEMENT

This Work Agreement (this
“Work Agreement”) dated as of April 1,
2003 is by and among WILSON SONSINI GOODRICH & ROSATI
(“Wilson”), TWO FREEDOM SQUARE, L.L.C.
  ( "Landlord") and THE TITAN CORPORATION
("Tenant") and is made with reference to the following
recitals:

RECITALS:

A.       
Pursuant to a Deed of Lease dated as of October 6, 2000, as amended
by a First Amendment to Deed of Lease dated as of February 16,
2001, a Second Amendment to Deed of Lease dated as of April 5,
2001, a Third Amendment to Deed of Lease and Partial Termination
Agreement dated as of December 13, 2002, a Fourth Amendment to Deed
of Lease dated of even date herewith and the Consent, as defined
below (collectively, the “Wilson
Lease”), Landlord has
leased to Wilson certain space (the “Wilson
Premises”) in the office
building located at 11955 Freedom Drive, Reston, Virginia (the
“Building”), as more
particularly described in the Wilson Lease. 

B.        
Pursuant to a Sublease of even date herewith (the “Wilson
Sublease”), Tenant is
subleasing the entire Wilson Premises from Wilson.  Landlord
is consenting to the Wilson Sublease pursuant to, and subject to
the conditions set forth in, a Consent to Sublease by and among
Landlord, Titan and Wilson of even date herewith (the
“Consent”).

C.       
Pursuant to a Deed of Lease of even date herewith (the
“Lease”), Landlord
has leased to Tenant certain space (the
“Premises”) in the
Building, as more particular described in the Lease.  The
Premises and the Wilson Premises shall be collectively referred to
in this Work Agreement as the “Unified
Premises.”

D.        The
parties hereto desire a unified work agreement with respect to
initial improvements to be made by (or on behalf of) Tenant in the
Unified Premises.  Unless otherwise provided herein, all terms
used in this Work Agreement that are defined in the Lease shall
have the meanings provided for in the Lease.

Authorized Representatives.  Tenant designates Dean
Kershaw and/or Les Rose ("Tenant's Authorized
Representative") as the person(s) authorized to approve in
writing all plans, drawings, specifications, change orders, charges
and approvals pursuant to this Agreement on behalf of Tenant. 
Landlord designates Peter Johnston and/or Peter Otteni
(“Landlord’s Authorized Representative”)
as the person(s) authorized to approve in writing all plans,
drawings, specifications, change orders, charges and approvals
pursuant to this Agreement on behalf of Landlord.  Wilson
designates Barbara Vold (“Wilson’s Authorized
Representative”) as the person(s) authorized to approve
in writing any items for which Wilson’s approval is required
hereunder.  Where any party designates more than one
Authorized Representative, then the act of any one of such
Authorized Representatives shall be sufficient to bind such
party.   Any party may designate a substitute Authorized
Representative by written notice to the other parties to the
addresses set forth in the Lease and the Wilson Sublease, as
applicable.  No party shall be obligated to respond to any
instructions, approvals, changes, or other communications from
anyone claiming to act on the other party’s behalf other than
the other party’s Authorized Representative.  All
references in this Agreement to actions taken, approvals granted,
or submissions made by a party shall mean that such actions,
approvals or submissions have been taken, granted or made, in
writing, by such party’s Authorized Representative acting for
such party.

Landlord's Work.  Landlord has constructed the
base-building core and shell (the "Base Building Work") in
accordance with the final plans and specifications for the
Building, as amended.  Landlord has delivered (or within 10
days after the date hereof shall deliver) to Tenant
Landlord’s most current electronic version of the plans and
specifications for the Base Building Work, together with certain
amendments and supplements thereto (the “Base Building
Deliverables”).  In addition, Landlord shall make
available for Tenant’s review, Landlord’s files
containing field orders, shop drawings, and other design changes
affecting any portion of the Unified Premises.  If there
exists a material discrepancy between the “as built”
condition of any portion of the Unified Premises and the Base
Building Deliverables (and Tenant was not otherwise aware of such
material discrepancy), and such unknown material discrepancy
results in Tenant being required to (and Tenant actually does)
redesign the Leasehold Plans or incur increased construction costs,
then to the extent Tenant incurs increased design or construction
costs on account thereof, Landlord shall reimburse Tenant for the
reasonable, out-of-pocket increase in such costs incurred by Tenant
on account of such unknown material discrepancy.  Schedule
I attached hereto outlines the Base Building Shell. 
Landlord shall deliver to Tenant prior to the commencement of the
construction of the Leasehold Work (i) the Base Building Work
non-residential use permit that has been issued by the appropriate
governmental authority, and (ii) an AIA certificate of substantial
completion with respect to the Base Building Work.  As of the
Effective Date, Landlord has not received any notice of any
violation of any Legal Requirements that remains uncured with
respect to the Base Building Work.

Architect and Engineers.

       [Intentionally Deleted].

      Tenant shall employ DBI
Architects, or such other architect that Landlord shall approve in
its reasonable, discretion (the "Leasehold Architect") to
prepare all plans for the initial leasehold improvements in the
Premises (the “Leasehold Work-Premises”) and in
the Wilson Premises (the “Leasehold Work-Wilson
Premises”).  The Leasehold Work-Premises and
the Leasehold Work-Wilson Premises are referred to collectively in
this Work Agreement as the “Leasehold
Work”.  Tenant shall employ TOLK (the “Base
Building Engineers”, who in this context shall be
referred to as the "Leasehold Engineers") to prepare the
engineering drawings relating to the Leasehold Work; provided, however, if Tenant is unable to employ the Base
Building Engineers on terms reasonably acceptable to Tenant, Tenant
shall retain another qualified engineer approved by Landlord, which
approval shall not be unreasonably withheld, conditioned or
delayed. 

[Intentionally Omitted].

Plans for Leasehold Work.

      Tenant shall cause the Leasehold
Architect to prepare programming and space plans (the
“Space Plans”) and design development drawings
(the “Design Drawings”) for the Leasehold Work
in the entire Unified Premises, in form approved by Tenant, for
submission to Landlord’s Authorized
Representatives), c/o Boston Properties, Inc., 401
9th Street, N.W., Washington, D.C. 20004for its approval no later than September 30,
2003.  If Landlord has any comments with respect to the Space
Plans and/or Design Drawings, Landlord shall make such comments
known to Tenant within ten (10) business days following submission
of the Space Plans and Design Drawings, as applicable, to
Landlord.  Tenant shall incorporate into the Leasehold Work
the standard design concepts shown on Schedule X attached to
this Work Agreement, except to the extent Landlord approves
exceptions therefrom.

      Intentionally Omitted.

      Tenant shall cause the Leasehold
Architect and the Leasehold Engineers to prepare final construction
documents for the Leasehold Work in the entire Unified Premises, in
form approved by Tenant, for submission to Landlord’s
Authorized Representative for its approval within a reasonable
period of time following the date on which Landlord provides its
comments to the Space Plans and Design Drawings pursuant to
Paragraph 5(a) above, provided that the final construction
documents may not be submitted for bid of the Leasehold Work prior
to Landlord’s review thereof.  If Landlord has any
comments with respect to the construction documents, Landlord shall
make such comments known to Tenant within ten (10) business days
following submission of the construction documents to
Landlord.  The construction documents for the Leasehold Work
that have been submitted by Tenant and approved by Landlord shall
be referred to herein as the "Leasehold Plans".  Any
references to “any component of the Leasehold Plans”
shall include all prior versions and drafts of the Space Plans and
Design Drawings.

      All plans, drawings and
documents related to the Leasehold Work (and any change orders
related thereto) shall be submitted to Landlord for its approval in
accordance with this Work Agreement, which approval shall be
granted or withheld in accordance with Paragraph 5(e)
below.  If Landlord reasonably requires that any submission
from Tenant be modified in order to obtain Landlord’s
approval, then Tenant shall within a reasonable period of time
after receipt of Landlord’s comments, resubmit revised
documents, plans, specifications or other materials, as the case
may be, incorporating Landlord’s requested changes and
responding to any other issues or questions raised by Landlord in
its prior submission.  Such submission and approval process
shall continue pursuant to Paragraphs 5(a), 5(c), and/or
5(d) of this Work Agreement, as applicable, until approval is
granted as submitted and Tenant has addressed all other comments
raised by Landlord.  After Landlord has approved any component
of the Leasehold Plans, then Landlord shall not thereafter object
to any improvements specifically shown on the previously approved
plan, except to the extent other portions of the Leasehold Work
(that were not shown on such approved plan) affect the approved
improvements or as may be required by Legal Requirements, however,
the foregoing shall not prevent Landlord from having the right to
comment on further details of any approved improvement as such
details are submitted to Landlord for approval in accordance with
this Agreement.  Landlord agrees to provide one (1)
consolidated set of Landlord’s comments in response to each
Tenant submission.  Landlord’s comments shall be
delivered to Tenant in whatever form Landlord reasonably deems
appropriate provided such comments are in sufficient detail for
Tenant to accordingly revise its plans.  If Landlord fails to
respond to Tenant within the applicable time period (including with
respect to change order requests submitted to Landlord pursuant to
Paragraph 9 below), Tenant shall deliver a second written
request for Landlord’s approval, which second request shall
be delivered to Landlord’s Authorized Representative and
shall clearly state that the request will be deemed approved in
accordance with the applicable subparagraph of this Work Agreement
if Landlord fails to respond within five (5) business days. 
If Landlord fails to respond to Tenant within five (5) business
days after Landlord’s receipt of such second notice, then
Landlord shall be deemed to have approved the submission, request,
or change order, as applicable.  Tenant shall be solely
responsible for the compliance of the Leasehold Plans with all
Legal Requirements and with all Loss Control Guidelines established
by Landlord’s insurance carrier and in effect as of
May 1, 1999, which Loss Control Guidelines shall be
substantially in the form of the draft Loss Control Guidelines
effective as of the date hereof and provided by Landlord to Tenant
prior to the Effective Date, and Landlord’s approval thereof
shall not constitute Landlord’s representation or approval
that the Leasehold Plans (or any prior version in the development
thereof) comply with Legal Requirements.

      Notwithstanding the foregoing,
Landlord shall not unreasonably withhold, condition, or delay its
consent to any such plans, drawings or specifications (or
clarifications thereof) provided however that if any portion of
such submission has (i) an impact on the construction, exterior
appearance, or appearance from the main lobby of the Building or
other tenant premises and for those portions of the Unified
Premises visible from the exterior of the Unified Premises, or (ii)
an adverse affect on the base building systems, or structural
components or structural integrity of the Building, or (iii) does
not comply with Landlord’s standard design concepts as
described on Schedule X hereto, then Landlord may grant or
withhold its consent in Landlord’s sole and absolute
discretion.  Landlord’s approval of any of such plans,
drawings and specifications shall not constitute Landlord’s
approval of any delays caused by Tenant and shall not be deemed a
waiver of any rights or remedies that may arise as a result of such
delays.  Notwithstanding the foregoing, any roof penetrations
shall be subject to Landlord’s approval in its sole and
absolute discretion and must be performed so as not to void or
alter any roof guaranty or warranty.

      Tenant shall reimburse Landlord
for all reasonable, third-party, out-of-pocket costs incurred by
Landlord in reviewing the Leasehold Plans, or any component
thereof, relating to the Building structure or the base Building
mechanical, electrical, HVAC, plumbing or fire and life safety
systems within twenty (20) days after Tenant's receipt of an
invoice therefor, or at Landlord’s option, Landlord may
deduct the same from the Improvements Allowance.  Tenant shall
use reasonable efforts to notify Landlord approximately five (5)
days before it submits any plans, specifications or drawings to
Landlord for approval to enable Landlord to arrange appropriate
staffing to review the submission in a timely fashion.

      (1)  Within ten (10) days
after the date hereof, Wilson shall deliver to Tenant the latest
version of its plans for the existing leasehold improvements on the
15th and 16th floors of the Wilson Premises in CADD format. 
Simultaneously with Tenant’s delivery to Landlord of the
Space Plans and Design Drawings for the Unified Premises as set
forth in Paragraph 5(a), Tenant shall also deliver copies of
the Space Plans and Design Drawings (but not interim progress
drafts thereof) to Wilson for Wilson’s review and approval as
provided in this paragraph.  Wilson’s review of the
Space Plan and Design Drawings shall be to determine, in its
reasonable discretion, that (a) the Special Use Areas, in the
aggregate (as defined below), are not allocated to the Wilson
Premises on a materially disproportionate basis as between the
Wilson Premises and the Premises; and (b) the Leasehold Work
– Wilson Premises is of the type that landlords have
generally permitted in other Class “A”  office
buildings in the Northern Virginia area.  Wilson shall be
entitled to withhold its approval if it reasonably determines that
the conditions set forth in clauses (a) and (b) have not been
satisfied, and in such event Wilson shall not be liable for any
delay or re-design costs resulting from such determination. 
“Special Use Areas” shall mean laboratories,
cafeterias, data center areas, areas with raised flooring, 
auditoriums (not including large conference facilities), training
centers and other improvements of a type that are not 
customarily constructed for general office use.  “SCIF
improvements” are specifically not included in this Special
Use Area definition.   In addition, change orders
requested by Tenant after Wilson’s approval of the Space
Plans and Design Drawings that materially and substantially change
the previously approved plans shall be submitted to Wilson for its
approval in accordance with the foregoing standard. 

                       
(2)        Wilson shall respond
to such requests for approval within the same time periods and in
the same manner as Landlord is obligated to respond.   If
Wilson fails timely to respond or improperly withholds its approval
as aforesaid, then it shall hold Landlord harmless from and against
any out-of-pocket costs incurred by Landlord on account of such
failure, including additional abatement granted to Tenant pursuant
to Section 3.1(b) of the Lease.   Similarly, if
Landlord fails timely to comply with its obligations under this
Agreement, then it shall hold Wilson harmless from and against any
out-of-pocket costs incurred by Wilson on account of such failure,
including additional abatement granted to Tenant pursuant to
Section 3.1(b) of the Lease.  Except as specifically
provided in this subparagraph, Wilson shall not be liable to either
Landlord or Tenant (i) for a failure of either to perform its
obligations to the other under this Work Agreement, (ii) for the
cost of any work or improvements to be constructed pursuant to this
Work Agreement (except that Landlord may devote the Unfunded Wilson
Allowance to the Leasehold Work-Wilson Premises), or (iii) for any
defect in design, construction, or equipment installed, injury to
persons, damage to property, failures to comply with Legal
Requirements, or mechanic’s lien claims arising from any
activity, act or omission governed by or resulting from this Work
Agreement.  Notwithstanding anything herein to the contrary,
Tenant shall have no claim whatsoever against Wilson under this
Work Agreement.  Landlord shall indemnify, defend, and hold
harmless Wilson, and Tenant shall indemnify, defend and hold
harmless Wilson, to the same extent that it (Landlord or Tenant)
has agreed to do so for the benefit of the other (Tenant or
Landlord) with respect to any activity, act or omission governed by
or resulting from this Work Agreement, excluding (with respect to
Landlord only) any matters for which Wilson is obligated to
indemnify Landlord as provided above in this paragraph.

                       
(3)        Landlord agrees that
in reviewing and approving the Leasehold Plans, and each component
thereof, and administering its other obligations under this
Agreement, Landlord shall, in good faith, apply a substantially
uniform standard of review as between the plans related to the
Wilson Premises and the plans related to Premises (i.e.,
Landlord shall not approve any component of Leasehold Work with
respect to the Wilson Premises that it would not approve with
respect to the Premises had such component been designed to be
located in the Premises).  At Landlord’s request, Tenant
shall promptly confirm that Landlord has complied with the
foregoing review obligations.

[Intentionally Deleted]. 

Cost of Leasehold Work.    The cost of the design, permitting and
construction of the Leasehold Work (including all "soft" costs),
and other project costs (collectively, the "Leasehold Cost")
shall be borne by Tenant; provided, however, that Landlord shall
disburse the Improvements Allowance described in Paragraph 8
below in accordance with this Work Agreement.  Any portion of
the Leasehold Cost in excess of the Improvements Allowance (except
to the extent any costs are reasonably increased as a result of
Landlord Delay) shall be borne by Tenant, and such excess amounts
are referred to herein as "Tenant's Expenses."  All
amounts payable by Tenant pursuant to this Work Agreement shall be
considered additional rent and subject to the provisions of
Section 19.6 of the Lease.

      The Improvements Allowance shall
be separately accounted for and disbursed on a pro rata basis based
on a Leasehold Cost budget for the Wilson Premises (the
“Leasehold Cost-Wilson Premises”), and a
separate  Leasehold Cost budget for the Premises (and, subject
to the provisions of Paragraph 8 below, Tenant may elect in
its sole discretion to apply a portion of the Landlord Allowance
toward the Leasehold Work – Wilson Premises) (the
“Leasehold Cost-Premises”) as more particularly
described below. 

      In the event that the Leasehold
Cost is greater than the Improvements Allowance, then a portion of
the Improvements Allowance (or such portion thereof as has not
previously been disbursed to pay Tenant's architectural,
engineering and project management costs) shall be disbursed to
Tenant or the Leasehold Contractor in pro rata payments, based on
the percentage of the Leasehold Work that has been completed (but
not in excess of the sums actually being disbursed to the Leasehold
Contractor).  If the cost to construct the Leasehold Work, as
adjusted by any increase or decrease in Leasehold Costs resulting
from change order, will exceed the unapplied (and unreserved)
portion of the Improvements Allowance (the "Unused
Allowance"), then Landlord's pro rata share of the requisition
shall be determined by multiplying said requisition by a fraction,
the numerator of which is the amount of the Unused Allowance as of
the date of such requisition, and the denominator of which is the
total cost to complete the Leasehold Work as adjusted by any
increase or decrease in Leasehold Costs resulting from change
orders as of such date.    Notwithstanding the foregoing
to the contrary, a condition precedent to Landlord’s
obligation to disburse any portion of the Improvements Allowance
shall be the delivery to Landlord of (I) invoices for portions of
the Leasehold Work, (II) partial lien waivers for such work from
all persons or entities that could file mechanics' or materialmen's
liens against the Building or the Land with respect to all work
performed or services or materials provided through the date of
each such invoice (subject only to receipt of the requisitioned
amount), (III) evidence that all labor or materials included within
the Leasehold Work for which a requisition is being submitted has
been incorporated into the Unified Premises in accordance with this
Work Agreement, (IV) written authorization from Tenant to disburse
the portion of the Improvements Allowance being requisitioned and
(V) such other documentation as may be reasonably requested by
Landlord or its lender. 

      In the event that the actual
Leasehold Cost is greater than the Leasehold Contractor's approved
bid thereof plus the cost of change orders, then, except to the
extent that such excess results from any Landlord Delay or
Landlord’s gross negligence or willful misconduct, Tenant
shall pay to Landlord as additional rent the excess of the actual
Leasehold Cost over the Improvements Allowance as and when such
payments are due (i.e., Tenant shall pay its pro rata share
of each requisition as described in Paragraph 7(b)
hereof).  Subject to compliance with the provisions of
Paragraph 8 with respect to application of the Improvements
Allowance, any portion of the Improvements Allowance that remains
unreserved and unapplied by July 21, 2005 (but not in excess of
Five Dollars ($5.00) per rentable square foot) shall be applied
against the annual base rent first due and owing following the
Lease Commencement Date (the “Base Rent
Allotment”).  In addition, Tenant may use up to Five
Dollars ($5.00) per rentable square foot for relocation costs,
including, movers, consultants, furniture and equipment takedown
and set up, data and telephone cabling and signage (the
“Relocation Allotment”).  Any unapplied
portion of the Improvements Allowance in excess of the Base Rent
Allotment and the Relocation Allotment shall be deemed waived and
forfeited.

      Improvements
Allowance.  Landlord hereby agrees to grant Tenant an
allowance (the "Improvements Allowance") in an amount equal
to Eleven Million Two Hundred Twenty-One Thousand Three Hundred
Dollars ($11,221,300.00), to be applied in accordance with this
Work Agreement.  A portion of the
improvements allowance provided to Wilson under the Wilson Lease in
the amount of Two Million Nine Hundred Forty-One Thousand Seven
Hundred Forty-One Dollars ($2,941,741.00) (the “Unfunded
Wilson Allowance”) has not yet
been disbursed under the Wilson Lease, Landlord's agreement to
advance Unfunded Wilson Allowance shall be deemed to satisfy
Landlord’s obligation under the Wilson Lease to advance any
further allowance to Wilson except to the extent any portion of the
Unfunded Wilson Allowance remains undisbursed (and uncommitted) as
of the date of any termination of the Wilson Sublease. 
The parties hereby agree that (a) at least Three Million Seven
Hundred Twenty-Four Thousand Nine Hundred Thirty Dollars
($3,724,930.00) shall be applied toward the cost of Leasehold
Work-Wilson Premises (subject to Tenant applying (as provided in
paragraph 7(c) hereof) a portion of such sum toward the Base
Rent Allotment and the Relocation Allotment); (b) with respect to
each floor of the Unified Premises other than the 15th
and 16th floors, Tenant shall expend at least Thirty
Dollars ($30.00) per square foot of rentable area on such floor
toward the cost of Leasehold Work on such floor, and together with
each request for disbursement, Tenant shall provide documentation
as to the total then-current amount expended on each such floor;
(c) Landlord shall have the right to audit Tenant’s books and
records with respect to the Leasehold Work on an open-book basis;
(d) if Tenant fails to expend at least Thirty Dollars ($30.00) per
square foot on each floor of the Unified Premises other than the
15th and 16th floors, then Landlord shall
have the right to reserve any such unused portion of the
Improvement Allowance until further improvements are constructed on
the applicable floor.

Change Orders.  If, after Landlord has approved the
Leasehold Plans, Tenant requests any change or addition to the work
and materials shown thereon, then such change order shall require
Landlord's approval, which approval shall be granted or withheld in
accordance with the approval standard set forth in Paragraph
5 above.  Landlord shall use reasonable efforts to respond
promptly to Tenant’s requests for changes.  In the event
a change order requested by Tenant with respect to the Leasehold
Plans causes the Leasehold Cost to exceed the amount of the
Improvements Allowance, then all additional expenses attributable
to any such change or addition requested by Tenant and approved by
Landlord, shall be payable by Tenant pursuant to the provisions of
this Work Agreement. 

Landlord Delay.  If and to the extent Tenant shall
be actually delayed in completing the Leasehold Work as a result
of: (i) Landlord's failure to comply with any deadline specified in
this Exhibit for which there is no “deemed approved,”
two-notice process, or (ii) Landlord's failure to pay when due any
portion of the Improvements Allowance, for which Tenant has timely
and properly submitted its request therefor pursuant to the
provisions of this Work Agreement (but only to the extent such
failure actually delays the completion of the Leasehold Work), or
(iii) Tenant being required to redesign or reconstruct the
Leasehold Work as more particularly described in Paragraph 2
above on account of the type of material discrepancy for which
Landlord is obligated to reimburse Tenant for excess costs, or (iv)
latent defects in the Base Building Work discovered and requiring
repair during the course of construction of the Leasehold Work, or
(v) Wilson’s failure timely to respond to Tenant’s
request for approval or Wilson’s improper withholding of its
approval, then such delay shall constitute "Landlord
Delay”.  Tenant shall notify Landlord’s
Authorized Representative (in writing and with reasonable
specificity) promptly upon Tenant’s becoming aware of the
existence of any such Landlord Delay and, notwithstanding the
preceding sentence, if Tenant fails to so notify Landlord (in
writing) as soon as reasonably practicable after Tenant becomes
aware of an event that may cause such delay, then any period of
delay prior to such notice shall not constitute Landlord Delay;
provided, however, that no notice shall be required with respect to
any Landlord Delays caused by clause (i) above.  Tenant shall
use good faith reasonable efforts to counter the effect of any
Landlord Delay; however, Tenant shall not be obligated to expend
any additional amounts in such efforts (e.g., by employing
overtime labor or by funding any portion of the allowances in the
case of a Landlord Delay pursuant to clause (ii) above) unless
Landlord agrees in advance to bear any incremental cost associated
with such efforts (whether or not such efforts are ultimately
successful).

[Intentionally Omitted]. 

Tenant Shall Employ Leasehold Contractor. 
Tenant’s construction manager shall enter into the contract
with the Leasehold Contractor and the following terms and
conditions shall apply:

      Selection of Leasehold
Contractor.  The Leasehold Contractor shall be a
qualified, licensed contractor selected by Tenant and reasonably
approved by Landlord from the list attached hereto as Schedule
IX.

      As Is Condition. 
All of the Unified Premises except those portions located on the
15th and 16th floors of the Building are
currently in the condition described on Schedule I attached hereto
(“Base Building Shell Condition”).

      [Intentionally
Omitted].    

      Tenant's Project Manager.
Tenant may employ a professional construction management firm
reasonably approved by Landlord to provide project management
services with respect to the Leasehold Work, and shall pay any fees
due to the project manager for such services; provided that Tenant
may draw upon the Improvements Allowance to pay such
fees. 

      Performance of Leasehold
Work.  All work performed by the Leasehold Contractor and
its subcontractors shall be performed in a good, workmanlike and
safe manner, in accordance with all applicable laws and regulations
and in substantial conformity with the approved Leasehold Plans
(subject to reasonable changes, substitutions and refinements
requested and approved pursuant to this Work Agreement). 
Landlord shall have the right to cause Tenant to correct, replace
or remove any improvements installed in the Unified Premises by the
Leasehold Contractor or its subcontractors that do not comply with
the preceding sentence.  At no charge to Tenant, Landlord
shall coordinate Tenant’s access to the Building, including
the parking areas and rear entrances, loading dock, use of the
Building’s service elevators and the stairwells.

      Work Rules and
Coordination. The Leasehold Contractor and all subcontractors
employed by the Leasehold Contractor shall comply with the work
rules and regulations attached hereto as Schedule V, and to
any additional or modified work rules that may be reasonably
adopted by Landlord for the Building, and shall coordinate on an
ongoing basis with Landlord's project manager and construction
manager concerning construction-related matters.  The
Leasehold Contractor shall conduct its activities in the Building
in a manner that will not delay or interfere with any work being
performed in the Building by any other contractor.  If
Landlord reasonably determines that the work being performed by (or
the manner in which the same is being performed) Leasehold
Contractor or any of its subcontractors, agents or employees is
delaying (or may delay) substantial completion of any other work in
the Building or is proceeding other than as approved by Landlord
pursuant to Tenant’s approved plans, then Landlord shall
notify Tenant thereof.  If such party fails to stop such
activity within one (1) day, then Landlord shall have the right to
order the Leasehold Contractor or any of such other parties to
immediately stop work until such time as Landlord determines that
such activity will not affect substantial completion of the other
work or so that the construction will proceed as approved by
Landlord. 

      Landlord's Approval of
Subcontractors. The Leasehold Contractor shall employ for the
performance of structural, mechanical, fire and life-safety,
electrical and plumbing work in the Unified Premises, and for any
work affecting the exterior of the Building, only those
subcontractors approved by Landlord, which approval shall not be
unreasonably withheld, conditioned or delayed; provided, however,
such approval shall not imply or effectively impose sole-source
procurement with any particular subcontractor or subcontractors
except with respect to the employment of the contractors under
warranty.

      Leasehold Contractor's
Insurance. The Leasehold Contractor and its subcontractors
shall maintain insurance coverages as set forth on Schedule
V attached hereto.

      Disbursement of the
Improvements Allowance. The Improvements Allowance shall be
disbursed as set forth in Paragraphs 7(a)-(c). 
Disbursements will be made by Landlord following Tenant's
submission of a requisition and any supporting documentation
reasonably required by Landlord (which requisitions shall be
submitted no more frequently than monthly). Provided such
requisition and supporting documentation are received by Landlord
no later than the twenty-fifth (25th) day of a calendar
month, Landlord shall pay the amount of such requisition (up to the
amount of the Improvements Allowance) by the of twenty-fifth
(25th) day of the immediately-succeeding calendar month.
On a progressive basis, with each request for a disbursement out of
the Improvements Allowance, provided Landlord has disbursed the
Improvements Allowance to the extent theretofore required under
this Work Agreement, Tenant shall obtain and deliver to Landlord
progressive lien waivers with respect to all work previously
performed in the Unified Premises and the Building from the
Leasehold Contractor as well as any other contractors employed
directly by Tenant.

      Reimbursement by Tenant of
Utility Costs, Etc.  Tenant shall reimburse Landlord,
within thirty (30) days after written demand, for the cost of any
utilities or services furnished to or consumed by the Leasehold
Contractor or its subcontractors in the course of performing work
in the Unified Premises, which cost is hereby conclusively agreed
to equal eight and one-half cents (8.5¢) per rentable square
foot per month for each floor on which the Leasehold Contractor
performs work during the course of such month.

      Final Lien Waivers. Upon
completion of the Leasehold Work, simultaneously with disbursement
of the final installment of the Improvements Allowance that is to
be paid to the Leasehold Contractor, Tenant shall obtain and
deliver to Landlord final unconditional lien waivers with respect
to all work performed in the Unified Premises and the Building from
the Leasehold Contractor as well as any other contractors employed
directly by Tenant. Should any mechanic's or materialman's lien be
filed against the Unified Premises or the Building with respect to
the Leasehold Work, Tenant shall bond or pay off such lien within
ten (10) days after the filing thereof.

      Responsibility for Work.
Except to the extent of any delay directly attributable to Landlord
Delay, Tenant shall be solely responsible for the progress of
construction of the Leasehold Work and for the quality or fitness
thereof. Tenant shall be liable for any damage to the Building or
the base-building systems caused by Tenant, the Leasehold
Contractor, or any of its subcontractors.

      Permits.  Tenant
shall obtain all governmental permits and approvals relating to the
performance of the Leasehold Work.  Copies of all building
permits, non-residential use permits, and other governmental
notices, permits or licenses received with respect to the Leasehold
Work shall be promptly furnished to Landlord.

      As-Built Drawings. 
Upon completion of the Leasehold Work, Tenant shall comply with and
provide Landlord with the documents and
materials set forth in the close-out requirements as set forth on
Schedule VII attached hereto and made a part
hereof.

[signatures on following pages]

IN WITNESS WHEREOF,
Landlord, Tenant and Wilson have executed this Work Agreement under
seal on or as of the day and year first above written.  By its
execution hereof, Wilson does not assume any obligations created by
Landlord, and Wilson only has those rights and obligations
specifically assigned to it by this Work Agreement.

LANDLORD:

TWO FREEDOM SQUARE,
L.L.C.

By: 
          BOSTON
PROPERTIES LIMITED
                                                  
PARTNERSHIP, a Delaware limited partnership

                
By:       BOSTON PROPERTIES,
INC.,

                
a Delaware corporation, its sole

 general partner

By:    
__________________[SEAL]

           
Name: ________________________

           
Title:   ________________________

                                                                       
By:       TERRABROOK TWO FREEDOM

                                                                                    
SQUARE, L.L.C., a Delaware limited

                                                                                    
liability company, member

                                                                                   
By:     ________________________[SEAL]

                                                                                   
Name: ________________________

                                                                                   
Title:   ________________________

                                                                       
TENANT:

                                                                       
THE TITAN CORPORATION, a Delaware

corporation

WITNESS:

By:      
_________________                         
By:      
____________________________________

Title:    
________________                           
Name:  ____________________________________

                                                                       
Title:    
____________________________________

                                                           
[CORPORATE SEAL]

[signatures
continue on following page]

                                                                       
WILSON:

WILSON SONSINI GOODRICH
& ROSATI,

Professional
Corporation

By:
________________________________

    
   Donna M. Petkanics

       Managing
Director, Operations

By:
________________________________

       Bradford C.
O’Brien

       Assistant
Secretary

WORK
AGREEMENT

SCHEDULE
I

BASE
BUILDING SHELL CONDITION ITEMS

Building structure including foundations, slab on grade,
supported slabs and structural concrete.

Fireproofing of structural steel as required by code.

Men’s and women’s toilet rooms substantially
complete including plumbing and fixtures, paint and lighting per
code (including the ADA).

Drinking fountains installed per code (including the ADA).

Electrical closets complete with tenant panel for power and
lighting.

Building fire stairs complete.

Mechanical equipment rooms complete with air handlers and
ductwork.

Mechanical penthouse substantially complete with base building
equipment.

Elevators, cabs, frames and entries.

Primary HVAC loop ductwork from the mechanical rooms around the
cores.

VAV boxes at a ratio of one box with control thermostat per 1500
RSF (coiled up awaiting tenant walls).

Drywall ready for paint around columns, outside of cores and
perimeter wall.

Fire command center substantially complete.

Fire alarm system with connections to base building equipment
(tamper and flow switches, HVAC units, elevators, etc.). 
System to be sized to accept tenant devices.

Fire sprinkler pump (if required) with tamper and flow switches
on the risers, sprinkler loop on each floor with heads in base
building areas (toilet, mechanical, stair towers, penthouse,
etc.).

Electrical capacity in the bus duct will be provided at 2
watts/RSF “connected” for lighting and 4.0 watts/RSF
“connected” for power.

Perimeter security system.

Loading dock with exterior doors and bumpers.

Exit lights at each base building exit.

Base building emergency generator.

One inch aluminum window blinds.

WORK
AGREEMENT

SCHEDULE
II

[INTENTIONALLY OMITTED]

WORK
AGREEMENT

SCHEDULE
III

[INTENTIONALLY OMITTED]

WORK
AGREEMENT

SCHEDULE
IV

RULES
AND PROCEDURES FOR CONTRACTORS

The following requirements
have been developed to ensure that modifications or improvements to
the building and/or building systems and equipment are completed to
building standards while maintaining a level of safety consistent
with industry standards.  The review of tenant plans and/or
specifications by Two Freedom Square, L.L.C.
(“Landlord”) and its insurers,
consultants or other representatives, does not imply that any plans
so reviewed comply with applicable laws, ordinances, codes,
standards or regulations.  Nor does Landlord’s review or
approvals imply that any work is to be preformed at
Landlord’s expense.

Landlord has the explicit
right to remove from the project any person who does not comply
with these rules after one day’s notice.

I.
                    
GENERAL

No work will be performed until the Landlord has received two
(2) sets of signed and sealed drawings and specifications and has
given written approval, which approval shall not be unreasonably
withheld, conditioned or delayed provided the sealed documents are
consistent with the Leasehold Plans.

All modifications to the building or to the building systems and
equipment must comply with state, federal and local codes and
ordinances.

Prior to the work commencing, a building permit must be obtained
and displayed and a certificate of insurance from the contractor
must be furnished to the Landlord naming as additional insured, per
the following:

Two Freedom Square,
L.L.C.

Boston Properties Limited Partnership, a Delaware Limited
Partnership

Boston Properties, Inc., a
Delaware Corporation

BP Management, LP, a
Delaware Limited Partnership

Boston Properties, L.L.C.,
a Delaware Limited Liability Company

Terrabrook Two Freedom Square, LLC, a Delaware limited liability
company.

At the completion of the work, the Tenant shall direct the
Contractor to furnish the Landlord with one (1) set of
reproducible, two (2) sets of blue-line prints and one complete
CADD.DWG disk file showing the final as-built construction work
performed.

After initial occupancy the Landlord will be notified by the
contractor of all work scheduled and will be provided with a list
of all personnel working in the building.

Before any new electrical or mechanical equipment is installed
in the building, the Contractor will submit a copy of the
manufacturer's data sheet along with complete shop drawings and
submittals to the Landlord for approval.  Landlord shall
respond to such request for approval within 5 business days.

The Contractor must furnish the Landlord with a list of all
subcontractors including emergency phone and/or pager numbers prior
to commencing the work.

The Contractor must provide an on-site project superintendent at
all times that construction work is in progress.  This
supervisor must be knowledgeable of the project’s scope of
work and have adequate on-site reference materials including plans,
specifications and MSDS information on all materials used in the
performance of the work.

All workers must be dressed appropriately when working in an
occupied building. Shirts must be worn at all times.  No
shorts are permitted.

After initial occupancy of the building, all carts must be
furnished with pneumatic tires and rubber bumpers.

Smoking is not allowed in any occupied building.

After initial occupancy of the building, the use of radios is
prohibited.

Prior to start of work, all blinds must be raised and bagged,
all windowsills and other base building components must be
adequately protected and the protection must be maintained. 
Workers must not stand on windowsills or other building
components.

Any work that requires access to another tenant’s space
must first be coordinated through the Landlord.  All costs of
security or building engineering services required due to
Contractor’s work [or during the performance of the
Contractor’s work] shall be charged to the Tenant.

Dumping of construction debris into building drains, mop sinks,
trash dumpsters, etc. is strictly prohibited. If this does occur,
Contractor shall be charged 200% of the cost of clearing any drain
where evidence of this is found including administrative time.

  Base building restrooms within the construction area will
be available for use by Contractor unless landlord dedicates an
alternate location.  Contractor shall be responsible for any
damage to the restrooms and for cleaning and stocking during
construction. All other base building restrooms shall be locked and
are not to be used by construction personnel.

Use of the building stairwells for moving construction materials
and construction personnel shall be limited to the stairwell
designated by Landlord.

The Contractor shall repair all existing public area finishes
disturbed by the new tenant work or damaged by the
Contractor’s or subcontractor’s personnel. 

There is to be no contact, comments, etc. with building tenants,
their employees, clients, guest, etc.

No work will be performed from 8:00 a.m. to 6:00 p.m. that will
disturb or inconvenience any existing tenants in the building (e.g.
core drilling, shooting track, noxious odors, etc.). The Landlord
must preapprove any work that entails noise, vibration or noxious
odors.

Prior to core drilling or cutting, all slabs must be x-rayed and
the Landlord’s structural engineer must review x-rays before
commencing the work.  If obstructions are detected, relocate
the core drill as necessary.

Any roof related work must be performed by the base building
roofing contractor.

Contractor shall immediately report all accidents to the
Landlord in writing after first notifying the Landlord by
telephone.

Landlord shall approve manufacture of lockset and key cores for
compatibility with building master keying system.

LIFE SAFETY

Contractor shall furnish Landlord one set of sprinkler shop
drawings once they are completed by subcontractor and ready for
submittal to the Fire Marshall.  Once approved by the Fire
Marshall, the Contractor shall furnish Landlord one set of the
approved sprinkler shop drawings.

Contractor will not disconnect, tamper with, delete, obstruct,
relocate, or expand any life safety equipment, except as indicated
on drawings approved by the Landlord. Contractor shall not
interfere with or delay any other inspections scheduled prior to
Contractors inspections or testing.

Contractor will take necessary precautions to prevent accidental
fire alarms.  Any unit or device temporarily incapacitated
will be red-tagged "Out of Service" and the Landlord will be
alerted prior to the temporary outage.  See attached
“Guidelines for Managing Construction Project Fire Protection
Impairment”.

The base building fire alarm system shall monitor all tenant
installed special fire extinguisher/alarm detection systems. The
connections to the base building fire alarm system will be at the
tenant’s expense.

All Tenant installed fire alarm initiation and notification
devices that connect with the base building fire alarm system shall
match the base building system and be approved by the Landlord.

All connections to the building’s existing fire alarm
system are to be made only by the subcontractor specified by the
Landlord.

All fire alarm testing will be scheduled at least 72 hours in
advance with the Landlord and must occur after normal business
hours if the building is occupied.

Combustible and hazardous materials are not allowed to be stored
in the building without prior written approval of the
Landlord.  Material safety data sheets on all

  materials to be
stored in the building must be kept on site and a copy submitted to
the Landlord.

Dust protection of smoke detectors must be installed and removed
at the end of the day (if operational).  Dust protection is
required during construction to avoid false fire alarms and
damaging of detector system.  Filter media must be installed
over all return air paths to any equipment rooms prior to
demolition.  The media must be maintained during construction
and removed at substantial completion.

All buildings are to be fully protected by automatic sprinkler
systems in accordance with Landlord’s standards and
specifications.

All sprinkler systems and equipment are to be designed and
installed in accordance with the current standards of the National
Fire Protection Association.

All equipment, devices and materials used in the installation
should be listed by UL and FM Approved.

Connections to the base building sprinkler system/standpipe
riser shall be provided with a control valve and water flow alarm
device.  Sprinkler system control valves shall be UL Listed
and FM Approved, clockwise closing, indicating valves with
supervisory switches.

The entire sprinkler system should be designed and installed in
accordance with NFPA Pamphlet No. 13, 231 and 231C latest
issues.

Note #1: If concealed type
sprinkler heads are to be utilized in office areas, the system is
to be designed as an Ordinary Hazard Group 1 System.

Note #2:  For light
hazard designed systems, the hydraulically most remote design area
shall not be allowed a 40% reduction.  The minimum design area
shall be 1500 square feet.

Enclosed, as Attachment “A”, is a copy of the
impairments and hot work procedures.

P.
        All corrective work to
the fire alarm system due to the Tenant’s Contractor work
shall be charge to the Tenant.

PARKING - LOADING DOCK

Contractors, subcontractors and their personnel will not use the
loading dock area for daytime parking without first obtaining
permission from the Landlord 48 hours in advance to better assure
dock availability.  Unauthorized vehicles will be ticketed and
towed.

Use of the loading dock for deliveries/trash removal must be
scheduled through the Landlord.

Material that does not fit into the service elevator must be
delivered through a window opening.  The Contractor will be
responsible to remove and replace the glass and to adequately
protect the window framing with prior approval from the
Landlord.

Landlord’s designated glazing subcontractor must perform
removal and replacement of exterior glass.

UTILITIES

Utilities (i.e. electric, gas, water, telephone/cable) will not
be cut off or interrupted without 48 hour notice and written
permission of the Landlord and affected tenants.

SECURITY

When it is deemed necessary by the Landlord to temporarily issue
any key(s) or access card(s) to a contractor, Contractor will be
responsible for controlling possession and use of the key(s) or
access card(s) and will return them daily to the Landlord.

Contractor will be responsible for locking any secure area made
available to Contractor whenever that area is unattended.

Contractors may be required to wear identification badges, in
which case the badges will be issued by the Landlord to the
Contractor.

ELEVATORS

No passenger elevators will be used to move construction
material or construction personnel.

The service elevator can be used to move construction personnel
at any time during the day, provided the elevator doors are not
held open.  The service elevator can not be used to move
construction materials into the building during building operating
hours unless approved in writing by Landlord.  All other usage
must be scheduled with the Landlord with at least 48 hours
notice.

Any costs to repair damage to the elevators including dust or
dirt in machine rooms or shaft or costs for service calls resulting
from the contractor’s operations will be charged to the
Tenant.

CLEANING

Contractor will remove all trash and debris daily or as often as
necessary to maintain cleanliness in the building(s).  The
building trash compactors or containers are not to be used for
construction debris.

Walk-off mats or other protection must be provided at door
entrances where work is being performed.

Carpeting shall be protected by plastic runners or hardboard as
necessary to maintain cleanliness and to protect carpets from
damage.

Tile, granite and wood floors shall be protected from damage as
necessary.

Contractor will furnish a vacuum(s) with a supply of clean bags
and an operator to facilitate ongoing clean- up.

Trash removal will be scheduled and coordinated with the
Landlord.

Contractors must remove all food cartons and related debris from
the work area on a daily basis.

Driveway and street cleaning by Contractor will be required when
Contractor’s work has created mud or debris.

MECHANICAL AND ELECTRICAL WORK

Any installation or modification to building HVAC systems must
be first submitted for review by the Landlord.  This includes
base building systems as well as supplemental units and/or exhaust
or system.

The mechanical plan must be prepared by a licensed engineer and
must show size and location of all supply and return grilles. The
Landlord’s MEP engineer will review all MEP drawings. The
Tenant will pay for the cost of this review.

Contractors modifying ductwork, air grilles, VAV boxes, etc.
shall be responsible for balancing the air and water systems as
necessary and all air balancing is to be done in the presence of
the Landlord. Two copies of all balance reports shall be submitted
to Landlord for review and approval.

Any domestic or condenser water connections made to the
building's piping system, must include a high quality isolation
valve, (brass bodied gate or ball-type) and adequate system drain
valves.  If the system piping is of a different material a
dielectric union must be installed.  All valves and equipment
must be easily accessible; access doors are required in drywall or
other fixed construction.

Exhaust fans will not be installed which discharge into a return
ceiling plenum.  Such fans will be ducted to the outside via
exhaust shafts or other routes as approved by the Landlord.

Where independent tenant-owned air conditioning units are
installed, an electric submeter will be used or a flat rate
electricity charge paid by the Tenant based on anticipated
consumption will be established.

All wiring that is not reusable for telecommunications and
electrical systems including conduit, BX cable, electric, telephone
or data wiring shall be removed from the ceiling back to the
originating terminal block or panel.

The installation of tenant equipment (except emergency lighting
per code) on the base building emergency power supply systems is
not permitted.

Any existing mechanical systems and their controls that are to
remain shall be properly “commissioned”.  That is,
at the beginning of the job the systems will be turned over to the
Contractor in working condition by the Landlord.  Before
beginning any work, the Contractor should inspect the mechanical
systems and their controls to ensure their working condition. 
The Contractor should advise the Landlord of any noted
deficiencies.  At the end of the job, the Contractor will be
responsible for the proper operation of the mechanical
systems.  All circuit breaker panels must be clearly and
accurately identified with typed labels.

All smoke detectors shall be properly protected with bags prior
to start of work each day.  Bags shall be removed upon
completion of the day’s work (if operational).

All base building mechanical equipment shall be properly
protected with prefilters, dust covers etc. prior to start of
work.  Protection shall be removed and equipment wiped down at
completion.

Final fire alarm connections are to be performed by
Landlord’s designated subcontractor. All costs to be paid for
by tenant 

Energy management and building control work to be performed by
Landlord’s designated subcontractor.

Tenant installed equipment that supplements existing base
building equipment such as VAV boxes, fire alarm devices, control
work; etc. shall be identical to the existing base building
equipment to facilitate warranty and maintenance operations.

O.
       All concealed equipment shall
be located with necessary accessibility for maintenance and
repair.

Attached, as Attachment
“B”, is a copy of the Tenant Design Guidelines for
mechanical and electrical information and requirements.

ATTACHMENT
A

to

SCHEDULE IV OF WORK AGREEMENT

GUIDELINES FOR MANAGING CONSTRUCTION

PROJECT FIRE PROTECTION IMPAIRMENTS

GUIDELINES FOR MANAGING CONSTRUCTION

PROJECT FIRE PROTECTION IMPAIRMENTS

Impairments to the
building sprinkler and fire alarm systems are typically required
when renovations involve changes to these systems.  The
following impairment procedures must be adhered to whenever
impairments to the sprinkler or fire alarm systems are required or
encountered.

Contractors requiring an impairment shall: (i) be prepared to
furnish information to the Landlord’s fire safety supervisor
/ impairment coordinator as required to complete the pre-impairment
checklist, (ii) request a red tag permit and be prepared to fulfill
the responsibilities assigned to the contractor, (iii) upon
completion of the work or to release the impairment the contractor
shall return the Red Tag Permit, and (iv) assist in completing the
system restoration checklist with the fire safety supervisor /
impairment coordinator. Enclosed as Attachment A-1 is a copy of the
Impairment Checklist, the Red Tag Permit and the Restoration
Checklist. Important points are as follows:

A Red Tag Permit is required for any impairment of the sprinkler
/ fire alarm systems.

Each permit will be valid for one shift.

Plan all work to minimize the duration of the system(s)
impairment.

The actual impairment of the system(s) should not take place
until all personnel, material and equipment are at the work
location.

If possible, isolate only the work zone for impairment. 
System(s) must be restored at the end of work shift.

Impairments to large areas or that would affect primary life
safety system(s) should be scheduled for times when the building or
area is unoccupied.  Fire watch tours of the impaired area
shall be established and when possible personnel should be provided
at closed valves or fire pumps to quickly restore the system if a
fire occurs.

Hot work or other hazardous-type operations should not be
conducted in an area where the fire protection or life safety
system(s) are impaired.

If any hot work or hazardous operations are necessary as part of
the impairment, fire watches must be established.

A Hot Work Permit is required for any temporary operation
producing open flame or sparks.  This includes brazing,
cutting, grinding, soldering, pipe thawing, torch-applied roofing
and welding. Contractors requiring a hot work permit shall: (i) be
prepared to furnish information to the Landlord’s fire safety
supervisor / impairment coordinator as required to complete the hot
work permit, (ii) be prepared to fulfill the responsibilities
assigned to the contractor in the hot work permit, (iii) notify the
fire safety supervisor / impairment coordinator upon completion of
the work, and  (iv) assist in closing out the hot work permit
with the fire safety supervisor / impairment coordinator. Enclosed
as Attachment A –2 is a copy of the Hot Work Permit. 
Important points are as follows:

If there is a practical and safer way to do the job without hot
work, we require that method be used.

No hot work is permitted without authorization from the
Landlord’s representative serving as, the fire safety
supervisor / impairment coordinator, in the form of a signed hot
work permit.  This permit will be valid for a maximum of one
eight-hour shift.  After this time, another permit must be
obtained from and signed by the fire safety supervisor / impairment
coordinator, before any additional hot work can continue.

Specific fire fighting equipment and protection material will be
required at the hot work site before work starts.  Contractor
shall provide all equipment and protection required to ensure fire
safe operations or otherwise specified by the Landlord.

No hot work is permitted without a designated fire watch
present.  The contractor is responsible to provide necessary
personnel to conduct a fire watch (as defined in the hot work
permit) or otherwise specified by the fire safety / impairment
coordinator. If unsafe conditions are observed, the hot work
operation will be stopped until the hazard is neutralized or
eliminated.  Additionally, the fire safety supervisor /
impairment coordinator must be notified immediately of all unsafe
or hazardous conditions.

The contractor will verify that all hot work equipment is in
proper working order.  An inspection of the equipment may be
conducted by the fire safety supervisor / impairment coordinator
before the hot work permit is issued.  Any unsafe equipment
must be removed from the property and replaced prior to starting
hot work.

All contractor-owner equipment or materials stored in the
facility overnight must be properly secured in an area designated
by the fire safety supervisor / impairment coordinator.

A sprinkler impairment and
hot work in the same zone at the same time will not be
allowed.

ATTACHMENT
A-1

To

SCHEDULE IV OF
WORK AGREEMENT

IMPAIRMENT CHECKLIST, RED TAG PERMIT

AND RESTORATION CHECKLIST

ATTACHMENT
A-2

To

SCHEDULE IV OF WORK AGREEMENT

HOT WORK
PERMIT

ATTACHMENT
B

To

SCHEDULE IV OF WORK AGREEMENT

TENANT DESIGN GUIDELINES

[to be attached]

WORK
AGREEMENT

SCHEDULE
V

INSURANCE REQUIREMENTS FOR TENANT'S
CONTRACTOR

Tenant’s Contractors
shall procure and maintain for the duration of the contract
insurance against claims for injuries to persons or damages to
property which may arise from or in connection with the performance
of the work hereunder by the contractor, his agents,
representatives, employees, or subcontractors.  The cost of
such insurance shall be included in the contractor's bid, unless
otherwise specified.

           
Minimum Scope of Insurance

Coverage
shall be at least as broad as:

Insurance Services Office "occurrence" form CG 00 01 (ed. 10/93)
covering commercial general liability or its equivalent.

Insurance Services Office form CA 00 01 (ed. 6/92) covering
automobile liability, Code 1 "Any Auto" and Endorsements CA 22 32
ed. 4/92) and CA 01 12 (ed. 6/91).

Workers compensation insurance as required by labor code of the
jurisdiction in which the Building is located, and employers
liability insurance.

           
Minimum Limits of Insurance

Contractor
shall maintain limits no less than:

Commercial general liability: $1,000,000 combined single limit
per occurrence for death, bodily injury and property damage.
Minimum $2,000,000 aggregate.  (The general aggregate limit
shall apply separately to this project/location or the general
aggregate shall be twice the required limit.)

Automobile liability: $1,000,000 per person/$2,000,000 per
accident for death, bodily injury and property damage.

Workers compensation and employers liability: Workers
compensation limits as required by the labor code of the
jurisdiction in which the Building is located and employers
liability limits of $1,000,000 per accident.

Umbrella Liability:  $5,000,000 per occurrence and
$5,000,000 aggregate (The aggregate limit shall apply separately to
this project/location). 

      Coverages

General Liability and Automobile Liability Coverage

      The managing agent of the
Building, the holder of any mortgage (as defined in Section
21.17 of the Lease), and their respective officers and
employees are to be covered as additional insureds as respects:
liability arising out of activities performed by or on behalf of
the contractor; products and completed operations of the
contractor; premises owned, leased, or used by the contractor; or
automobiles owned, leased, hired, or borrowed by the
contractor.  The coverage shall contain no
special limitations on the scope of protection
afforded. 

      The
contractor's insurance coverage shall be primary insurance as
respects the Landlord, its officers, officials, and employees. Any
other insurance or self-insurance maintained by the Landlord, its
officers, officials, and employees shall be excess of and not
contribute with the contractor's insurance.

      Any
failure to comply with reporting provisions of the policies shall
not affect coverage provided to the agency, its officers,
officials, and employees.

      The contractor's insurance shall
apply separately to each insured against whom claim is made or suit
is brought except with respect to the limits of the insurer's
liability.

Workers Compensation and Employers Liability Coverage

The insurer shall agree to waive all rights of subrogation against
the Landlord, its officers, officials, and employees for losses
arising from work performed by the contractor for the
Landlord.

      All Coverages

Each
insurance policy required by this clause shall be endorsed to state
that coverage shall not be suspended, voided, canceled by either
party, reduced in coverage or in limits except after 30 days' prior
written notice by certified mail, return receipt requested, has
been given to the city.

      Acceptability of
Insurers

Insurance is to be placed
with insurers licensed to do business in the jurisdiction in which
the Building is located, that have been approved in advance by the
Landlord, with a Best's rating of no less than A:XI unless specific
approval has been granted by the Landlord.

      Verification of
Coverage

Contractor
shall furnish the Landlord with certificates of insurance
evidencing the coverages required by this Article. The certificates
for each insurance policy are to be signed by a person authorized
by that insurer to bind coverage on its behalf. The certificates
are to be on ACORD Form 27 and/or ACORD Form 25-S, or other
forms that are similarly binding on insurers,
which forms are to be received and approved by the Landlord before
work commences. In addition, the Landlord shall require an
endorsement naming the Landlord, the managing agent of the
Building, the holder of any mortgage (as defined in Section
21.1 of the Lease) and their respective officers and employees
as additional insureds or loss-payees (whichever is applicable).
The Landlord reserves the right to require Tenant to deliver
complete, certified copies of all required insurance policies, at
any time.

      Subcontractors

Contractors shall include
all subcontractors as insureds under their policies or shall
furnish separate certificates for each subcontractor in the form
described in clause E above. All coverage for subcontractors shall
be subject to all of the requirements stated herein. Commercial
general liability coverage shall include independent contractors
coverage, and the contractor shall be responsible for assuring that
all subcontractors are properly insured. 

SCHEDULE VI

[INTENTIONALLY OMITTED]

SCHEDULE VII

CLOSE-OUT REQUIREMENTS

The following items are
required from the general contractor prior to final payment being
made:

      One complete set of all
Operations and Maintenance Manuals bound in notebooks with an
index, as specified in the project manuals.

      Two sets of the
contractor’s record set drawings on paper sepia reproducible
form and in CADD form including architectural, structural,
plumbing, fire protection, elevator, mechanical, and electrical
drawings.  The as-built must include and modifications made to
the specifications, schedules and details and all changes initiated
by requests for information and field orders. 

      Copies of all building permits
and Non-Residential Use permits, or occupancy permits.

      Final Releases of Liens from the
general contractor and all major subcontractors.

      One copy of all warranties bound
in notebooks with a corresponding warranty log.

      One complete set of all approved
submittals and shop drawings and a copy of the final submittal log
if provided by the contractor.

      A complete list of all persons,
including names, addresses, phone numbers and contact persons that
will be providing warranty service during the warranty
periods.

      [Intentionally Deleted].

      One copy of NEBB certified air
and water balancing reports.

      When the general contractor
considers the work to be ready for final acceptance, written
certification from the general contractor shall be submitted
stating the following:

(a)       
Work has been completed in accordance with the contract documents
and Tenant Plans;

(b)        All
punch list items and other deficiencies identified by the
Certificate of Substantial Completion have been
corrected;

(c)       
Work has been inspected for compliance with the contract documents
and Tenant Plans;

(d)        All
mechanical and electrical equipment and systems have been tested in
the presence of the Landlord’s representative and are
operational; and

(e)       
Record set drawings have been reviewed and are
accurate.

SCHEDULE
VIII

[INTENTIONALLY OMITTED]

SCHEDULE
IX

APPROVED LIST OF CONTRACTORS

(if Tenant is engaging the contractor)

1.        

2.        

3.        

4.        

5.        

SCHEDULE
X

STANDARD DESIGN CONCEPTS

EXHIBIT
C

RULES
AND REGULATIONS

This Exhibit C is
attached to and made a part of that Deed of Lease dated as of 
April 1, 2003 (the "Lease"), between TWO FREEDOM
SQUARE, L.L.C.  (collectively, "Landlord") and
THE TITAN CORPORATION ("Tenant").  Unless the
context otherwise requires, the terms used in this Exhibit C
that are defined in the Lease shall have the same meanings as
provided in the Lease.

The following rules and
regulations have been formulated for the safety and well being of
all tenants of the Building and to insure compliance with municipal
and other requirements. Strict adherence to these rules and
regulations is necessary to guarantee that each and every tenant
will enjoy a safe and undisturbed occupancy of its premises in the
Building.  Any continuing violation of these rules and
regulations by Tenant shall constitute a default by Tenant under
the Lease (subject to the notice and cure period set forth in
Section 19.1(b) of the Lease).

The Landlord may, upon
request of any tenant, waive the compliance by such tenant of any
of the following rules and regulations in any particular instance,
provided that (i) no waiver shall be effective unless signed
by Landlord, or its authorized agent, (ii) any such waiver
shall not relieve such tenant from the obligation of complying with
such rule or regulation in the future unless otherwise agreed to by
Landlord, (iii) no waiver granted to any tenant shall relieve
any other tenant from the obligation of complying with these rules
and regulations, unless such other tenant has received a similar
written waiver from Landlord, and (iv) any such waiver by
Landlord shall not relieve Tenant from any liability to Landlord
for any loss or damage occasioned as a result of Tenant's failure
to comply with any rule or regulation.

      The sidewalks, entrances,
passages, courts, elevators, vestibules, stairways, corridors,
halls, and other parts of the Building not exclusively occupied by
any tenant shall not be obstructed or encumbered by any tenant or
used for any purpose other than ingress and egress to and from each
tenant’s premises. If a tenant’s premises are situated
on the ground floor of the Building, the tenant thereof shall, at
such tenant’s own expense, keep the sidewalks and curb
directly in front of its premises clean and free from ice and
snow.  Landlord shall have the right to control and operate
the public portions of the Building, and the facilities furnished
for common use of the tenants, in such manner as Landlord deems
best for the benefit of the tenants generally.  No tenant
shall permit the visit to its premises of persons in such numbers
or under such conditions as to interfere with the use and enjoyment
of the entrances, corridors, elevators and other public portions or
facilities of the Building by other tenants.

      No awnings, projections,
pictures or other items shall be attached to the outside walls of
the Building without the prior written consent of Landlord. 
No drapes, blinds, shades, screens, pictures, paper or other items
shall be attached to or hung in, or used in connection with, any
window or door of the Premises, without the prior written consent
of Landlord.  All awnings, projections, curtains, blinds,
shades, screens, lighting, ceiling tiles, wall surfaces and other
fixtures, including those used within the interior of the Premises
if visible from outside the Premises, must be of a quality, type,
design and color, and attached in the manner approved by
Landlord.  No furniture, configurations, material and
equipment storage (including the temporary stacking of boxes) or
interior decorations in the Premises that are visible from outside
the Premises shall be placed in the Premises without the prior
written consent of Landlord.

      No showcases or other articles
shall be put in front of or affixed to any part of the exterior of
the Building, nor placed in the halls, corridors or vestibules
without the prior written consent of Landlord.

      The water and wash closets and
other plumbing fixtures shall not be used for any purposes other
than those for which they were constructed, and no debris, rubbish,
rags, or other substances shall be thrown therein.  All damage
resulting from any misuse of the fixtures shall be borne by the
tenant who, or whose servants, employees, agents, visitors or
licensees, shall have caused the same.

      There shall be no marking,
painting, drilling into or defacement of the Building or any part
of the Premises that is visible from public areas of the
Building.  Tenants shall not construct, maintain, use or
operate within their respective premises any electrical device,
wiring or apparatus in connection with a loud speaker system or
other sound system, except as reasonably required as part of a
communication system approved prior to the installation thereof by
Landlord.  No such loud speaker or sound system shall be
constructed, maintained, used or operated outside of the
Premises.

      No bicycles or vehicles and no
animals, birds or pets of any kind shall be brought into or kept in
or about the Building or any tenant’s premises, except that
this rule shall not prohibit the parking of bicycles or vehicles in
the garage in the Building.  No cooking or heating of food
shall be done or permitted by any tenant on its premises, except
that Tenant’s employees may heat food in a microwave within
the Premises provided the food smell does not emanate from the
Premises.  No tenant shall cause or permit any unusual or
objectionable odors to be produced upon or permeate from its
premises.

      No space in the Building shall
be used for the manufacture of goods for sale in the ordinary
course of business, or for the sale at auction of merchandise,
goods or property of any kind.  Furthermore, the use of its
premises by any tenant shall not be changed without the prior
approval of Landlord.

      No tenant shall make any
unseemly or disturbing noises or disturb or interfere with
occupants of this or neighboring buildings or premises or those
having business with them, whether by the use of any musical
instrument, radio, talking machine, whistling, singing, or in any
other way.  No tenant shall throw anything out of the doors or
windows or down the corridors or stairs of the Building.

      No flammable, combustible or
explosive fluid, chemical or substance shall be brought into or
kept upon the premises.

      No additional locks or bolts of
any kind shall be placed upon any of the doors or windows by any
tenant, nor shall any changes be made in any existing locks or the
locking mechanism therein, without Landlord’s approval which
approval shall not be unreasonably withheld, conditioned or
delayed; however, except as otherwise provided in Section
12.1, Landlord may condition such consent on Tenant providing
to Landlord duplicate keys to all such locks or bolts.  The
doors leading to the corridors or main halls shall be kept closed
during business hours except as they may be used for ingress or
egress.  Each tenant shall, upon the termination of its
tenancy, restore to the Landlord all keys of stores, offices,
storage and toilet rooms either furnished to, or otherwise procured
by, such tenant, and in the event of the loss of any keys so
furnished, such tenant shall pay to Landlord the replacement cost
thereof.  Tenant’s key system shall be separate from the
rest of the Building.

      Landlord reserves the right to
inspect all freight to be brought into the Building and to exclude
from the Building all freight which violates any of these rules and
regulations or the Lease.

      No tenant shall pay any
employees on its premises, except those actually working for such
tenant at the tenant’s premises.

      Landlord reserves the right to
exclude from the Building at all times any person who is not known
or does not properly identify himself to the Building management or
watchman on duty.  Landlord may, at its option, require all
persons admitted to or leaving the Building to register.  Each
tenant shall be responsible for all persons for whom it authorizes
entry into the Building, and shall be liable to Landlord for all
acts or omissions of such persons.

      The Premises shall not, at any
time, be used for lodging or sleeping or for any immoral or illegal
purpose.

      Each tenant, before closing and
leaving its premises any time shall use commercially reasonable
efforts to see that all windows are closed and all lights turned
off.

      Landlord’s employees shall
not perform any work or do anything outside of their regular
duties, unless under special instruction from the management of the
Building.  The requirements of tenants will be attended to
only upon application to Landlord, and any such special
requirements shall be billed to Tenant (and paid when the next
installment of rent is due) in accordance with the schedule of
charges maintained by Landlord from time to time or at such time as
is agreed upon in advance by Landlord and Tenant.

      Canvassing, soliciting and
peddling in the Building is prohibited and each tenant shall
cooperate to prevent the same.

      There shall not be used in any
space or in the public halls of the Building, either by any tenant
or by jobbers or others in the delivery or receipt of merchandise,
any hand trucks except those equipped with rubber tires and side
guards.  Tenant shall be responsible to Landlord for any loss
or damage resulting from any deliveries made by or for Tenant to
the Building.

      Mats, trash or other objects
shall not be placed in the public corridors of the Building.

      Landlord does not maintain suite
finishes which are non-standard, such as kitchens, bathrooms,
wallpaper, special lights, etc.  However, should the need
arise for repairs of items not maintained by Landlord, Landlord
will arrange for the work to be done at Tenant’s
expense.

      Drapes installed by Landlord for
the use of Tenant or drapes installed by Tenant, which are visible
from the exterior of the Building, must be cleaned by Tenant at
least once a year, without notice, at Tenant’s own
expense.

EXHIBIT
D

FORM OF
DECLARATION

This Exhibit D is
attached and made a part of that certain Deed of Lease dated 
April 1, 2003 (the "Lease"), between TWO FREEDOM
SQUARE, L.L.C.  (collectively, "Landlord") and
THE TITAN CORPORATION("Tenant").  The
terms used in this Exhibit D that are defined in the Lease
shall have the same meanings as provided in the Lease.  The
Declaration to be executed by Landlord and Tenant pursuant to
Section 2.3 of the Lease shall provide as follows:

"This Declaration made as
of the ____ day of ____________, 2003 is being provided pursuant to
the terms and provisions of that certain Deed of Lease dated
____________, 2003, (the "Lease"), between TWO
FREEDOM SQUARE, L.L.C. (collectively, "Landlord") and
THE TITAN CORPORATION("Tenant").  The
parties to the Lease desire to confirm that the following terms
which are defined in the Lease shall have the same meanings set
forth below for all purposes in the Lease:

The Lease Commencement Date is ____________, 20__.

The initial term of the Lease shall expire on July 31,
2015.

The number of square feet of rentable area in the Premises is
____________.

The annual base rent with respect to the Premises for the first
Lease Year is an amount equal to Twenty-Six Dollars ($26.00).

As of the date hereof the Lease has not been modified and is in
full force and effect and there are no defaults thereunder.

Attached to this
Certificate is evidence of payment of all insurance required
pursuant to Article XIII of the Lease.

Initials of:

_______________

Landlord

______________

Tenant

EXHIBIT E

ACCEPTABLE FORM OF LETTER OF CREDIT

Irrevocable Letter of
Credit No.:__________________

_________________________,
20__

                                                           

c/o Boston Properties,
Inc.

401 9th Street, N.W.

Suite 700

Washington, DC  20004

Account
Party:             
                                                                                                           

Beneficiary:                  
                                                           
, a
                              
, its

                                               
transferees and assigns

                                               

Amount:                      
$____________ U.S. Dollars

Expiration
Date:           
___________________, ____

Ladies and
Gentlemen:

We hereby issue this
irrevocable, unconditional letter of credit number ______ (the
“Credit”) in your favor, payable in
immediately available funds in one or more draws of any sum or sums
not exceeding in the aggregate ________________________ dollars
($__________), by your draft(s) at sight presented at
________________________, substantially in the form of the draft
attached hereto as Attachment 1 and incorporated herein by
this reference.

This Credit shall be
automatically renewed from year to year commencing on the first
anniversary of the date hereof unless we shall give thirty (30)
days’ prior written notice to Beneficiary, by certified mail,
return receipt requested, at the address set forth above, of our
intent not to renew this Credit at the expiration of such thirty
(30) day period.  During such thirty (30) day period, this
Letter of Credit shall remain in full force and effect and
Beneficiary may draw up to the full amount hereof in accordance
with the terms hereof.

[Upon written notice from
Beneficiary that the amount of the Letter of Credit may be reduced,
the issuer shall be authorized to reduce the Letter of Credit
amount by the amount set forth in such written notice.]

We will accept any and all
such representatives as authorized and any and all statements
delivered hereunder as conclusive, binding and correct without
having to investigate or having to be responsible for the accuracy,
truthfulness, correctness, or validity thereof, and notwithstanding
the claim in any person to the contrary.

Drafts presented under
this Credit shall specify the number of this Credit as set forth
above and shall be presented on or before the Expiration Date
hereof (as it may have been extended from time to time).

This Credit is assignable
and transferable and may be transferred one or more times, without
charge, upon our receipt of your written notice that an agreement
has been executed to transfer or assign this Credit.

We hereby engage with you
that drafts drawn under and in compliance with the terms of this
Credit will be duly honored upon presentation to us.

This Credit sets forth in
full the terms of our undertaking and such undertaking shall not in
any way be modified, amended, amplified or limited by reference to
any document, instrument or agreement referred to herein, or by any
document, instrument, or agreement in which this Credit is referred
to, or to which this Credit relates, and any such reference shall
not be deemed to incorporate herein by reference any such document,
instrument or agreement.

Except as otherwise
expressly stated herein, this Credit is subject to the International Standby Practices ISP98 (International
Chamber of Commerce Publication No. 590) and, to the extent
not inconsistent therewith, the laws of the District of Columbia,
including without limitation, the Uniform Commercial Code in effect
therein.

                                                                                   
[BANK]

                                                                                   
By:      
______________________________

                                                                                               
Authorized Officer

SCHEDULE 1

FORM
OF DRAFT

DRAFT

$                                 
                                                           
                                                           

                                                                                               
[Place, Date]

At Sight

Pay to the Order of
                                                     
                                                                       

                                   
[Name of Beneficiary]

                                                                                                                                                           

[Dollar Amount of
Draw]

Drawn under
                                                              
  Letter of Credit No.
                                       

                       
[Issuing Bank]

For value received and
charge same to account of:

                                                                                   

[Applicant/Account
Party]

The undersigned
Beneficiary hereby certifies that it is entitled to draw the amount
drawn hereunder pursuant to the terms of that certain Lease dated
                 
                       
, between the referenced Account Party, as tenant, and the
undersigned Beneficiary, as landlord.

                                                                                   
                                                                       

                                                                                   
[Beneficiary]

EXHIBIT F

CHAR
AND JANITORIAL SPECIFICATIONS

1.        
DAILY

      Empty and wipe wastebaskets and
ash trays.  Sanitize as necessary.  Replace trash can
liners nightly.

      Clean cigarette urns.

      Sweep entire floor area,
including all lobbies, emergency exists, and stairways.  Damp
mop or otherwise clean any floor area soiled due to spillage or
other cause.

      Maintain lobbies to high
standards at all times.  Glass doors to be cleaned and all
metal polished as required.

      Vacuum all carpeted areas
including stairwells.

      Buff shine all hard surface
floors.

      Elevators to be thoroughly
cleaned and wiped including tracks.  Only one elevator may be
taken out of service at any one time.

      Police sidewalks, driveways,
loading docks and grounds around building.

      Spot wash to remove smudges and
marks from walls, doors, glass, and partitions as required.

      Clean and polish all drinking
fountains.

      Carpet spotting throughout
building to be done as necessary.

      Dust all desk tops, table tops
and incidental furniture.

      Brush all fabric covered chairs
with a lint brush.

      Damp wipe all telephones
including dials and crevices.

      Clean and disinfect all toilet
rooms and fixtures, and clean mirrors.  Pour one once of bowl
cleaner into urinals and toilet bowls after cleaning and do not
flush.

      Refill paper towel, toilet paper
and soap dispensing units.  Empty and clean paper towel and
sanitary napkin disposal receptacles.

2.        
WEEKLY

Wipe clean all interior and exterior aluminum, stainless steel
and other metals.

Completely dust office with cloth, including tops of files,
ledges, window sills, baseboards, chair rails, door louvers and
trim.

Damp wipe all desk tops, table tops and incidental
furniture.

3.        
MONTHLY

      Damp mop and buff all hard
surface floors including telephone and electrical closets.

Strip, wax and polish floor areas receiving considerable
traffic, such as aisles, coffee rooms, cafeterias, and reception
areas.

Machine scrub toilet room floors and completely disinfect all
room surfaces.  Clean floor drains and pour in 2 cups of water
and disinfectant solution.

Dust all pictures, frames, charts, registered, molding, ledges,
grills, exteriors of lighting fixtures, etc.

Wash all stairwell landings and treads.

Wash all interior glass walls and glass partitions.

4.        
QUARTERLY

      Wash all wastebaskets.

Strip and refinish all hard surfaces floors not covered
monthly.

Wipe down all walls.

Dust venetian blinds and window frames.

Thoroughly clean all elevator light fixtures and ledges.

Vacuum and dust all books in place.

Vacuum all upholstered furniture including each cushion.

5.        
SEMIANNUALLY

      Vacuum and clean all air
conditioning grills and wash as necessary.

Wipe down all exposed piping in stairwells and common
areas.

6.        
ANNUALLY

      Wash interior and lenses and all
light fixtures.

Clean all vertical surfaces not provided for above.

Damp wash all venetian blinds.

EXHIBIT
G

Two Freedom Square – Boston Properties, Inc.

HVAC
SPECIFICATIONS

The Building’s base
building HVAC system is designed to provide heat and cooling in
accordance with the following specifications:

	
Interior
Conditions:

	
	
Summer

	
73° F +/-
3° / 40-50% Relative Humidity

	
Winter

	
72° F +/-
3°(No Humidity Control)

		
	
Outdoor
Conditions:

	
	
Summer

	
95° F dry
bulb for transmission loads

		
78° F wet
bulb for cooling tower design

	
Winter

	
10° F dry
bulb

		
	
Lighting:

	
	
Typical
Office Space

	
1.5 watts
per square foot

		
	
Equipment
or Receptacle Load:

	
	
Typical
Office Space

	
2.5 watts
per square foot

		
	
Occupancy:

	
	
Typical
Office Space

	
1 Person/143
square feet average (Per 1996 BOCA)

		
	
Outside
Air Quantity:

	
	
Typical
Office Space

	
0.14 cfm per
square foot or 20 cfm per person average (Per 1996 BOCA)

		

Landlord shall use
reasonable efforts to maintain the temperatures set forth above in
the Premises during the normal hours of operation of the Building
so long as the Premises are being used and occupied in the manner
as specified under the  “Lighting”,
“Equipment or Receptacle Load” and
“Occupancy” categories as set forth above.

EXHIBIT
H

[INTENTIONALLY
OMITTED]

 

EXHIBIT
I

WILSON
SUBLEASE

SUBLEASE

THIS SUBLEASE (this "Sublease") is
dated as of the 1st day of April, 2003 (the “Commencement
Date”), and is made by and between WILSON SONSINI GOODRICH
& ROSATI, Professional Corporation ("Sublandlord"), and THE
TITAN CORPORATION, a Delaware corporation ("Subtenant"). 
Sublandlord and Subtenant hereby agree as follows:

Recitals: 

Boston Properties Limited Partnership and
Westerra Reston, LLC, as "Landlord", and Sublandlord, as "Tenant,"
are parties to that certain Deed of Lease and Rider No. 1
thereto dated October 6, 2000, as amended by that certain
First Amendment to Deed of Lease (the "First Amendment") dated
February 16, 2001, by Two Freedom Square, L.L.C., successor in
interest to Boston Properties Limited Partnership and Westerra
Reston, LLC ("Master Landlord"), and Sublandlord, that certain
Second Amendment to Deed of Lease (the "Second Amendment") dated
April 5, 2001, that certain Declaration of Lease Commencement
(the "Commencement Declaration"), dated September 12, 2002,
that certain Third Amendment to Deed of Lease and Partial
Termination Agreement (the "Third Amendment") dated
December 13, 2002, the Fourth Amendment (as defined below) and
the Consent (as defined below) (as amended, the "Master Lease"),
with respect to those certain premises consisting of approximately
107,050 rentable square feet described therein (the "Master
Premises") located at 11955 Freedom Drive, Reston, Virginia, and
more particularly consisting of consisting of approximately 22,711
square feet located on the 12th Floor of the "Building"
described in the Master Lease (the “Twelfth Floor”),
approximately 23,094 square feet located on the 13th
Floor of such Building (the “Thirteenth Floor”),
approximately 20,057 square feet located on the 14th
Floor of such Building (the “Fourteenth Floor”),
approximately 19,662 square feet located on the 15th
Floor of such Building (the “Fifteenth Floor”),
approximately 19,662 square feet located on the 16th
Floor of such Building (the “Sixteenth Floor”), and
approximately 1,864 square feet of rentable area on the C-1 level
of such Building (the “C-1 Space”).  A copy of the
Master Lease is attached hereto as Exhibit A. 
Capitalized terms used but not defined herein shall have the
meanings ascribed to them in the Master Lease, as modified by the
Consent (as so modified, the “Modified Wilson
Lease”).

Concurrently herewith, Master Landlord and
Subtenant are entering into a direct lease of certain premises
located on the second, third, fourth, sixth and tenth floors and on
the retail and concourse levels of the Building pursuant to a Deed
of Lease of even date herewith (the “Direct Lease”),
which lease provides Subtenant with an option to lease the Master
Premises from Master Landlord for the period commencing immediately
upon the expiration of the Master Lease.  A copy of the Direct
Lease is attached hereto as Exhibit B. 

Concurrently herewith, Master Landlord,
Subtenant and Sublandlord are entering into a Consent to Sublease
agreement (the “Consent”), pursuant to which Master
Landlord consents to this Sublease and Master Landlord, Subtenant
and Sublandlord make certain agreements regarding the Master Lease
and this Sublease.

Concurrently herewith, Master Landlord and
Sublandlord are entering into a Fourth Amendment to Deed of Lease
(the “Fourth Amendment”), which makes certain
amendments to the Master Lease related to this Sublease and the
Direct Lease.

Subleased Premises:  Subject
to the terms and conditions of this Sublease, Sublandlord hereby
subleases to Subtenant, and Subtenant hereby subleases from
Sublandlord, the entire Master Premises.  The Master Premises
are also sometimes referred to in this Sublease as the "Subleased
Premises". 

Term:

Term.  The term (the
"Term") of this Sublease shall be for the period commencing on the
Commencement Date and shall expire on July 30, 2014, unless
this Sublease is sooner terminated pursuant to its terms or
pursuant to a termination of the Master Lease (the "Termination
Date").   

No Options to Extend. 
Notwithstanding anything to the contrary in the Sublease or the
Master Lease, Subtenant shall not have any options to extend or
renew the Term of this Sublease.

Possession.  As of
April 15, 2003, Sublandlord has delivered to Subtenant possession
of the entire Subleased Premises, except the Fifteenth Floor. 
Subtenant acknowledges that Sublandlord currently occupies the
Fifteenth Floor for the conduct of Sublandlord’s
business.  Sublandlord will use reasonable efforts to relocate
to alternate premises by October1, 2003; provided, however, that such date shall be
extended to the extent that Sublandlord’s relocation is
delayed due to events or circumstances beyond Sublandlord’s
reasonable control, but in no event beyond April 1, 2004.

Rent:

Base
Rent.

Commencing on the
applicable Rent Commencement Date for each portion of the Subleased
Premises (as described in Paragraph 4.A(2) below) and continuing
each month thereafter throughout the Term of this Sublease,
Subtenant shall pay to Sublandlord as base rent ("Base Rent") for
the Subleased Premises monthly installments as follows:

Commencing on the Rent
Commencement Date for the Sixteenth Floor and continuing
throughDecember 31, 2003, monthly Base Rent for the
Sixteenth Floor shall equal Forty Thousand Nine Hundred Sixty-Two
and 50/100 Dollars ($40,962.50).  Commencing January 1, 2004,
and continuing through December 31, 2004, monthly Base Rent for the
Sixteenth Floor shall equal Thirty Thousand Eight Hundred
Eighty-Five and 73/100 Dollars ($30,885.73); 

Commencing on the
Rent Commencement Date for the Fifteenth Floor and continuing
through December 31, 2003, monthly Base Rent for the Fifteenth
Floor shall equal Forty Thousand Nine Hundred Sixty-Two and 50/100
Dollars ($40,962.50). Commencing January 1, 2004, and continuing
through December 31, 2004, monthly Base Rent for the Fifteenth
Floor shall equal Thirty Thousand Eight Hundred Eighty-Five and
73/100 Dollars ($30,885.73); and

Commencing on the
Rent Commencement Date for the balance of the Subleased Premises
(i.e., for the Fourteenth Floor, the Thirteenth Floor, the Twelfth
Floor, and the C-1 Space) (collectively, the “Shell
Space”) and continuing through December 31, 2004, monthly
Base Rent for the Shell Space shall equal One Hundred Six Thousand
Three Hundred Eighty-Six and 26/100 Dollars
($106,386.26).

The Rent Commencement
Date for each portion of the Subleased Premises shall be determined
as follows:

As regards the
Sixteenth Floor, the Rent Commencement Date shall be the earlier to
occur of (i) the date that Subtenant commences business operations
in any portion of the Sixteenth Floor, and (ii) July 1,
2003;

As regards the
Fifteenth Floor, the Rent Commencement Date shall be the later of
(i) the date that Sublandlord delivers possession of the Fifteenth
Floor to Subtenant, and (ii) September 1, 2003; and

As regards the Shell
Space, the Rent Commencement Date shall be January 1,
2004.

Accordingly, from January 1, 2004, through
December 31, 2004, monthly Base Rent for the entire Subleased
Premises shall equal One Hundred Sixty-Eight Thousand One Hundred
Fifty-Seven and 72/100 Dollars ($168,157.72).

On January 1, 2005, and on January 1 of
each calendar year thereafter during the Term of this Sublease,
monthly Base Rent for the Subleased Premises shall be increased as
follows:

As of January 1,
2005, monthly Base Rent for the Subleased Premises shall be
increased to One Hundred Seventy-Four Thousand Eight Hundred
Forty-Eight and 35/100 Dollars ($174,848.35);

As of January 1,
2006, monthly Base Rent for the Subleased Premises shall be
increased to One Hundred Eighty-One Thousand Seven Hundred
Thirty-Nine and 69/100 Dollars ($181,739.69);

As of January 1,
2007, monthly Base Rent for the Subleased Premises shall be
increased to One Hundred Eighty-Eight Thousand Eight Hundred
Thirty-Seven and 77/100 Dollars ($188,837.77);

As of January 1,
2008, monthly Base Rent for the Subleased Premises shall be
increased to One Hundred Ninety-Six Thousand One Hundred
Forty-Eight and 80/100 Dollars ($196,148.80);

As of January 1,
2009, monthly Base Rent for the Subleased Premises shall be
increased by Two Hundred Three Thousand Six Hundred Seventy-Nine
and 16/100 Dollars ($203,679.16);

As of January 1,
2010, monthly Base Rent for the Subleased Premises shall be
increased to Two Hundred Eleven Thousand Four Hundred Thirty-Five
and 43/100 Dollars ($211,435.43);

As of January 1,
2011, monthly Base Rent for the Subleased Premises shall be
increased to Two Hundred Nineteen Thousand Four Hundred Twenty-Four
and 39/100 Dollars ($219,424.39);

As of January 1,
2012, monthly Base Rent for the Subleased Premises shall be
increased to Two Hundred Twenty-Seven Thousand Six Hundred
Fifty-Three and 02/100 Dollars ($227,653.02);

As of January 1,
2013, monthly Base Rent for the Subleased Premises shall be
increased to Two Hundred Thirty-Six Thousand One Hundred
Twenty-Eight and 50/100 Dollars ($236,128.50); and

As of January 1,
2014, monthly Base Rent for the Subleased Premises shall be
increased to Two Hundred Forty-Four Thousand Eight Hundred
Fifty-Eight and 25/100 Dollars ($244,858.25).

Base Rent and monthly
estimates of “Operating Expenses” (collectively and
together with all Additional Rent (as defined below), hereinafter
"Rent") shall be paid in advance on or before the first (1st) day
of each month.  Base Rent and monthly estimates of
“Operating Expenses” for any period during the Term
which is for less than one (1) full month of the Term shall be a
pro rata portion of the monthly installment based on the actual
number of days in such month.  Rent shall be payable without
notice or demand and without any deduction, offset or abatement, in
lawful money of the United States of America.  Subject to the
terms of the Consent, Rent shall be paid directly to Sublandlord at
650 Page Mill Road, Palo Alto, CA 94304-1050, Attention:
Controller, or such other address as may be designated in writing
by Sublandlord.

Additional
Rent.  All monies other
than Base Rent required to be paid by Subtenant under this Sublease
shall be deemed additional rent ("Additional Rent"). 
Subtenant is obligated to pay estimated payments of
“Operating Expenses” (including, without limitation,
"Real Estate Taxes" and "Complex Common Expenses") and adjustments
thereto under Article IV of the Direct Lease, as incorporated
herein, for all periods from and after July 1, 2004; provided, however, that
the Base Year for purposes of calculating Subtenant's pro rata
share of such Operating Expenses shall be calendar year 2003. 
All amounts payable by Subtenant under this Sublease shall be due
and payable on the date for payment set forth in the Direct Lease,
as incorporated herein; provided, however, that, to the extent that
the Direct Lease does not specify a date for payment of any amount,
then such amount shall be due and payable thirty (30) days after
delivery to Subtenant of an invoice therefor.  Subtenant and
Sublandlord agree, as a material part of the consideration given by
Subtenant to Sublandlord for this Sublease, that Subtenant shall
pay all costs, expenses, taxes, insurance, maintenance and other
charges of every kind and nature arising in connection with the
Modified Wilson Lease or the Subleased Premises, such that
Sublandlord shall receive, as net consideration for this Sublease,
full reimbursement thereof, except (i) to the extent resulting from
the fact that the Base Year under this Sublease differs from the
Base Year under the Master Lease, (ii) as otherwise set forth
herein or in the Consent, (iii) for costs and
expenses arising from Sublandlord’s failure to perform its
obligations hereunder, under the Consent or under the Direct Lease,
(iv) for costs and
expenses attributable to Sublandlord for any matter that
Sublandlord is required to perform that does not involve Subtenant
or (v)for costs and expenses not
intended to be passed to Subtenant.   

Prepayment of
Rent.  Upon execution
hereof by Subtenant, Subtenant shall pay to Sublandlord the sum of
One Hundred Sixty-Eight Thousand One Hundred Fifty-Seven and 72/100
Dollars ($168,157.72), which shall constitute Base Rent and shall
be credited against Subtenant’s obligations to pay Base Rent
as it first becomes due hereunder.

Security
Deposit:  Within ten (10)
business days after the execution hereof, Subtenant shall deliver
to Sublandlord an unconditional, irrevocable letter of credit (the
“Letter of Credit”) in the amount of Five Hundred Four
Thousand Four Hundred Seventy-Three and 16/100 Dollars
($504,473.16) as security for the performance by Subtenant of its
obligations under this Sublease, and not as a prepayment of rent
(the "Security Deposit").  The Letter of Credit shall be
subject to the terms and conditions of Sections 5.1(b) through
(d)of the Direct
Lease,modified
as incorporated herein pursuant to Paragraph 22 of this
Sublease.  Any cash that Sublandlord may hold as a
security deposit, including the proceeds if Sublandlord draws on
the Letter of Credit, will be deposited into an interest-bearing
account maintained by Sublandlord (which account may contain the
security deposits of other tenants or subtenants or other
sums).  Any cash portion of the Security Deposit held by
Sublandlord shall accrue interest at a standard passbook savings
rate of interest, as reasonably determined by Sublandlord, and any
such interest shall be deemed to be a part of the Security
Deposit.  The Security Deposit shall not serve as an advance
payment of rent or a measure of Sublandlord's damages for any
default under this Sublease.  Subtenant covenants and agrees
that it shall not assign or encumber or attempt to assign or
encumber the Security Deposit and neither Sublandlord nor its
successors or assigns shall be bound by any such agreement,
encumbrance, attempted assignment or attempted
encumbrance.

Late Charge;
Interest:  If Subtenant fails
to pay Sublandlord any amount due hereunder on or before the date
such payment is due, Subtenant shall pay to Sublandlord upon demand
a late charge together with default interest on any such amounts as
set forth in and subject to the provisions of Sections 19.5 and 19.6 of the Direct Lease, as
incorporated herein, including any provisions
regarding notice and grace periods.

Holdover:  Subtenant
shall surrender the Subleased Premises on or before the expiration
or earlier termination of this Sublease in accordance with the
terms of this Sublease unless Master Landlord has leased the
Subleased Premises to Subtenant pursuant to a separate agreement
between Master Landlord and Subtenant.  If Subtenant fails to
surrender the Subleased Premises as aforesaid, Subtenant shall
indemnify, defend and hold harmless Sublandlord from and against
all losses, costs, claims, liabilities and damages (including
reasonable attorneys' fees and expenses) resulting from Subtenant's
failure to surrender the Subleased Premises on or before the
expiration or earlier termination of this Sublease in the condition
required under the terms of this Sublease (including, without
limitation, any liability or damages sustained by Sublandlord as a
result of a holdover of the Master Premises by Sublandlord
occasioned by the holdover of the Subleased Premises by
Subtenant).  Notwithstanding the foregoing, Sublandlord and
Subtenant agree that the indemnification provisions set forth in
the immediately preceding sentence shall be null and void and of no
further force and effect to the extent that Master Landlord has
released Sublandlord from the losses, costs, claims, liabilities
and damages described in the immediately preceding
sentence.

Condition; Master
Landlord's Obligations:  The
parties acknowledge and agree that Sublandlord has made no
representations or warranties, express or implied, whatsoever with
respect to the Subleased Premises, including, without limitation,
any representation or warranty as to the suitability of the
Subleased Premises for Subtenant's intended use or any
representation or warranty made by Master Landlord under the Master
Lease.  Sublandlord shall have no obligation to make or
perform any alterations, improvements or repairs to the Subleased
Premises, and, except as set forth in the Work Agreement, dated as
of the date hereof, executed by and among Master Landlord,
Sublandlord and Subtenant (the “Work Agreement”), which
Work Agreement is attached hereto as Exhibit C and is hereby
incorporated herein by reference, Sublandlord shall have no
obligation whatsoever to pay the cost of any alterations,
improvements or repairs to the Subleased Premises, including,
without limitation, any improvement or repair required to comply
with any law, regulation, building code or ordinance (including the
Americans with Disabilities Act of 1990, as amended).  In
addition, Sublandlord shall have no obligation to perform any
repairs, provide any services or utilities, or perform any other
obligation of Master Landlord required to be performed by Master
Landlord under the terms of the Modified Wilson Lease (including,
without limitation, Master Landlord's obligations under
Section 8.3 and Article XIV of the Modified Wilson Lease
and Master Landlord's obligations to comply with laws and carry
property insurance).  Sublandlord shall, however, request
performance of the same in writing from Master Landlord promptly
after being requested to do so by Subtenant and shall use
Sublandlord's reasonable efforts to obtain Master Landlord's
performance, at Subtenant’s cost. 

Right to Cure
Defaults:  If Subtenant fails
to pay any sum of money to Sublandlord or fails to perform any
other act on Subtenant's part to be performed hereunder, then
Sublandlord may, but shall not be obligated to, make such payment
or perform such act.  All such sums paid, and all costs and
expenses of performing such acts, shall be deemed Additional Rent
payable by Subtenant to Sublandlord upon demand, together with
interest thereon at the Default Rate (as defined in Section 19.5 of
the Direct Lease, as incorporated herein) from the date of the
expenditure until repaid.

Assignment and
Subletting:  Subtenant may not
assign any interest in this Sublease (by operation of law or
otherwise), sublet any of the Subleased Premises, transfer any
interest of Subtenant therein or permit any use of the Subleased
Premises by any other party (collectively, "Transfer"), except as
set forth in or permitted pursuant to the provisions of Article VII
of the Direct Lease, as incorporated herein.

Use:  Subtenant may use
the Subleased Premises as permitted by and pursuant to the terms
and conditions of Article VI of the Direct Lease, as incorporated
hereinand for no other purpose whatsoever.  Subtenant
shall comply with all reasonable rules and regulations promulgated
from time to time by Master Landlord and Sublandlord.  Subject
to Master Landlord's consent, Sublandlord shall permit Subtenant,
without additional cost, to use Sublandlord's available space in
the Building's lobby directory; provided, however, that Sublandlord
shall retain the right to use space in the Building’s lobby
directory to the extent reasonably required by Sublandlord until
such time as Sublandlord has vacated the Fifteenth
Floor.

Effect of
Conveyance:  As used in this
Sublease, the term "Sublandlord" means the holder of the Tenant's
interest under the Modified Wilson Lease.  In the event of any
assignment or transfer of the Tenant's interest under the Modified
Wilson Lease, which assignment or transfer may occur at any time
during the Term hereof in Sublandlord's sole discretion,
Sublandlord shall be and hereby is entirely relieved of all
covenants and obligations of Sublandlord hereunder arising from and
after the date of such transfer, and it shall be deemed and
construed, without further agreement between the parties hereto,
that any transferee has assumed and shall carry out all covenants
and obligations thereafter to be performed by Sublandlord hereunder
arising from and after the date of such transfer.  Sublandlord
shall transfer and deliver any security of Subtenant to the
transferee of the Tenant's interest under the Modified Wilson
Lease, and thereupon Sublandlord shall be discharged from any
further liability with respect thereto.

Delivery and
Acceptance:  By taking
possession of each portion of the Subleased Premises, Subtenant
conclusively shall be deemed to have accepted such portion of the
Subleased Premises in their then-existing, "AS IS" condition,
without any representation or warranty whatsoever from Sublandlord
with respect thereto.

Improvements: 

Subtenant shall not
make any alterations or improvements to the Subleased Premises
except as permitted in and in accordance with the provisions
of (i) the Direct Lease, as incorporated herein, or (ii) the Consent.

Subtenant
acknowledges that all Landlord’s Work (i.e., both the Base
Building Work and the Leasehold Work, as described in the Work
Agreement) has been completed with respect to the Sixteenth Floor
and the Fifteenth Floor.  Subtenant further acknowledges that
all Base Building Work has been completed with respect to the Shell
Space and that the Shell Space is "Ready for Buildout" as defined
in the Work Agreement.

Release and Waiver
of Subrogation: 
Notwithstanding anything to the contrary in this Sublease, the
parties hereto release each other and their respective agents,
employees, successors and assigns from all liability for damage to
any property that is actually covered by property insurance in
force or which would normally be covered by full replacement value
"all risk" property insurance, without regard to the negligence or
willful misconduct of the entity so released.  Each party
shall cause each insurance policy it obtains to include a waiver of
subrogation regarding the liabilities released hereby. 
Sublandlord shall not be liable to Subtenant, nor shall Subtenant
be entitled to terminate this Sublease or to abate Rent for any
reason, including, without limitation, (i) failure or
interruption of any utility system or service or (ii) failure
of Master Landlord to maintain the Subleased Premises as may be
required under the Master Lease.

Insurance:  Subtenant
shall obtain and keep in full force and effect, at Subtenant's sole
cost and expense, during the Term all of the insurance required to
be carried by the "Tenant" under the Direct Lease, modified as
incorporated herein pursuant to Paragraph 22. 
Subtenant shall include both Sublandlord and Master Landlord, as
their interests may appear, and the holder of any mortgage or deed
of trust secured by Master Landlord’s interest in the
Subleased Premises, as its interests may appear (but only to the
extent required under the provisions of the Modified Wilson Lease),
as additional insureds and loss payees in any policy of insurance
carried by Subtenant in connection with this Sublease and shall
regularly provide Sublandlord with current certificates of
insurance.

Default:  Subtenant
shall be in material default of its obligations under this Sublease
upon the occurrence of any of the events set forth in Section 19.1
of the Direct Lease, as incorporated herein, but only after the
expiration of any applicable notice and cure periods (each, an
“Event of Default”).

Remedies:  Upon any
Event of Default by Subtenant, Sublandlord shall have all remedies
provided to the "Landlord" under Sections 19.2 and 19.3 of the
Direct Lease (modified as incorporated herein pursuant to
Paragraph 22 hereof), but using, in any measure of damages,
the Base Rent and Operating Expenses due and payable under this
Sublease.

Surrender:  On or
before the Termination Date, Subtenant shall surrender the
Subleased Premises to Sublandlord in the condition required by the
Modified Wilson Lease upon any surrender of the Master Premises,
subject to any right to occupy the Subleased Premises after the
Termination Date granted to Subtenant by Master Landlord.  To
the extent Sublandlord is liable therefor, Subtenant shall repair
any damage to the Subleased Premises caused by Subtenant's removal
of its property from the Subleased Premises.  To the extent
Sublandlord is liable therefor, Subtenant shall indemnify, defend
and hold harmless Sublandlord from and against any and all losses,
costs, claims, liabilities and damages (including reasonable
attorneys' fees) arising from or relating to any failure of
Subtenant to surrender the Subleased Premises in the condition
required by this Sublease, including, without limitation, all costs
incurred by Sublandlord in returning the Subleased Premises to
their required condition, plus interest thereon at the Interest
Rate.

Broker:  Sublandlord
and Subtenant each represent to the other that they have dealt with
no real estate brokers, finders, agents or salesmen in connection
with this transaction other than Washington Realty Group, Inc.
representing Sublandlord (“Sublandlord’s Broker”) and Insignia/ESG representing Subtenant (“Subtenant’s Broker”).  Each party shall indemnify, defend
and hold the other party harmless from and against all claims for
brokerage commissions, finder's fees and other compensation made by
any other agent, broker, salesman or finder as a consequence of the
indemnifying party’s actions or dealings with such other
agent, broker, salesman or finder.  Sublandlord shall indemnify, defend and hold Subtenant
harmless from and against all claims for brokerage commissions,
finder's fees and other compensation made by Sublandlord’s
Broker.  Sublandlord shall pay the Subtenant’s Broker’s fees pursuant to a separate written agreement
between Sublandlord and Subtenant’s Broker.

Notices:  All notices
or other communications required hereunder shall be in writing and
shall be deemed duly given if delivered in person (with receipt
therefor), or if sent by certified or registered mail, return
receipt requested, postage prepaid, or by recognized overnight
courier to the address set forth below the signature of the
appropriate party at the end of this Sublease; provided, however, that any failure
to provide a courtesy copy shall not in any way invalidate or
otherwise impair the delivery of any notice to
Subtenant.  Either party may change its address for the giving
of notices by notice given in accordance with this section. 
All notices given to Master Landlord under the Modified Wilson
Lease shall be considered received only when delivered in
accordance with the Modified Wilson Lease.  Each of
Sublandlord and Subtenant agree to deliver copies of any notices
sent by such party to Master Landlord at Master Landlord’s
address as set forth in Section 25.6 of the Direct
Lease. 

Other Sublease
Terms:

Incorporation By Reference.  Except as set forth below and except as otherwise
provided in this Sublease or in the Consent, the terms and
conditions of this Sublease shall include all of the terms of the
Direct Lease (as such leases exist as of the date hereof and in the
form attached hereto as Exhibit B) and such terms are
incorporated into this Sublease as if fully set forth
herein, except that: (i) each reference in such incorporated
sections to "Lease" and the
“Rent Commencement Date” shall be deemed a reference to this "Sublease"and January 1, 2004,
respectively; (ii) each
reference to the "Premises"and the “Wilson Premises” shall be deemed a reference to the "Subleased
Premises"; (iii) each reference to "Landlord" shall be deemed
a reference to "Sublandlord" and each reference to "Tenant" shall
be deemed a reference to "Subtenant", except as otherwise expressly
set forth herein; (iv) with respect to
“Landlord’s” work, services, utilities,
electricity, repairs (including, without limitation, repairs of any
damage caused by Master Landlord), restoration, insurance,
indemnities, reimbursements, representations, warranties or the
performance of any other obligation of the "Landlord" under the incorporated provisions of
the Direct Lease, whether or
not incorporated herein, or incorporated provisions of the Direct
Lease, the sole obligation of Sublandlord shall be to request the
same in writing from Master Landlord as and when requested to do so
by Subtenant, and to use Sublandlord's reasonable efforts (not
including the payment of money or the incurring of any liabilities)
to obtain Master Landlord's performance (provided, however, that
Sublandlord shall reasonably cooperate with Subtenant to institute any legal proceedings against Master
Landlord reasonably
determined by Subtenant to be necessary to enforce the provisions
of the Modified Wilson Lease, including any proceedings that need
to be brought in the name of Sublandlord, provided,
that Subtenant pays all costs,
and indemnifies and holds Sublandlord harmless against all losses,
costs, claims, liabilities and damages, in connection therewith);
(v) with respect to any approval required to be obtained from the
"Landlord" under the incorporated provisions of the Direct Lease,
such approval must be obtained from Master Landlord; (vi) in
any case where the "Landlord" reserves or is granted the right to
manage, supervise, control, repair, alter, regulate the use of,
enter or use the Premisesor
any areas beneath, above or adjacent thereto, such reservation or grant of
right of entry shall also be deemed to be for the benefit of Master
Landlord; (vii) in any case where "Tenant" is to indemnify,
release or waive claims against "Landlord", such indemnity, release
or waiver shall be deemed to run from Subtenant to both Master
Landlord and Sublandlord and in any case where
“Landlord” is to indemnify, release or waive claims
against “Tenant”, such indemnity, release or waiver
shall be deemed to run from Sublandlord to Subtenant;
(viii) in any case where "Tenant" is to execute and deliver
certain documents or notices to "Landlord", such obligation shall
be deemed to run from Subtenant to both Master Landlord and
Sublandlord; (ix) Subtenant shall pay all consent and review
fees described in the Modified Wilson Lease and the incorporated
provisions of the Direct Lease (including, without limitation, the
Work Agreement) only to Master Landlord;  and (x) the
following modifications shall be made to the Direct Lease as
incorporated herein:

the following
provisions of the Direct Lease are not incorporated herein:
Recitals (except for defined terms), Sections 1.1, 1.2 (the
last two sentences only) and 1.3, Article II (except Section 2.5),
Sections 3.1, 3.2, 3.3 (first sentence only), Sections 4.1 and 4.3 (but, as to both Sections 4.1 and 4.3, only through the words “Tenant Occupancy Date
and” in the first sentence thereof), Section 5.1(a), Sections
5.2 and 5.3, Section 6.4, Section 8.4, Section 10.1, Section 15.2(b) (clauses (i) and (ii) only), Sections 15.3
and 15.5, Section 19.1(c), Article XXII, Sections 25.3, 25.6 and25.25, Articles XXVI -
XXVIII, Rider No. 1 and Exhibits A, B, D, H, I, J and
L;

reference to
"Landlord" in the following provisions of the Direct Lease (as
incorporated herein) shall be deemed a reference to "Master
Landlord" only: Sections 4.1, 4.2, 4.3 (in first and third sentences only), 4.7, 4.8, Section
6.1(a) (in the portion of the fourth sentence beginning with the
words “provided, however” only), Section 6.1(b),
Section 7.2 (clause (iv) of the introductory paragraph only),
Sections 8.1-8.3, 9.1, 10.1, 13.2, Section 13.3(a),
Section 14.1, Section 14.2 (second and third lines only),
Sections 14.4, 14.6 and 14.7, Section 16.1,
Section 17.1 (third line only), Section 17.3 (fourth and
fifth sentences only), Section 17.4, Section 17.5 (fourth
and sixth lines only), Section 18.2, Section 21.3(d),
Section 23.2, Article XXIV, and Exhibit C;

any right to abate
rent provided to Subtenant through incorporation of the provisions
of the Direct Lease shall not exceed the rent actually abated under
the Master Lease with respect to the Subleased
Premises;

in Section
4.1(b)(1)(vi), "Lease" shall refer to the Master Lease;

in Section 5.1(d),
the amount set forth in the first sentence is deleted and replaced
by “One Hundred Sixty-Eight Thousand One Hundred Fifty-Seven
and 72/100 Dollars ($168,157.72)”;

in
Section 20.2(a), "this Sublease" is substituted for "Article
XIX";

in
Section 25.24, "Trevor Chaplick, whose address prior to October 1, 2003 is 11955
Freedom Drive, 15th Floor, Reston, Virginia 20190 and
whose address after October 1, 2003 is 11921 Freedom
Drive, Reston, Virginia  20190" is substitutedfor "Dave Boone, 3261 Foxmill Road, Oakton, Virginia
22124"; and

Exhibit Eshall be
modified to refer to this Sublease and to Sublandlord and
Subtenant.

Assumption of
Obligations.  Except as set forth in the Consent, Subtenant
expressly assumes and agrees, except with respect to the amount of
the payment of Base Rent and Operating Expenses (which shall be
paid in the amounts set forth in this Sublease): (i) to comply
with all provisions of the Modified Wilson Lease (except as
expressly deleted herein); (ii) to perform all of the
obligations on the part of the "Tenant" to be performed under the
Modified Wilson Lease (except as expressly deleted herein) and
(iii) not to violate the provisions of the Modified Wilson
Leasethat are incorporated
herein.  In the event of a conflict
between the provisions of this Sublease and the
provisions of the Direct Lease incorporated herein, the express
provisions of this Sublease shall control.

Sublandlord Obligations.  Sublandlord shall perform its obligations under the
Modified Wilson Lease and shall not cause an Event of Default to
occur thereunder (subject to Subtenant’s performance of its
obligations under this Sublease).

Relationship of Sublease to Modified Wilson
Lease.  This Sublease is
and shall be at all times subject and subordinate to the
Modified Wilson Lease.  Subject to the
provisions of the Consent, if the Modified
WilsonLease is terminated for any
reason, this Sublease shall terminate
simultaneously with such termination without any liability of
Sublandlord to Subtenant, except to the extent such termination results from
or is caused by the failure of Sublandlord to comply with the
provisions of Section 22.C herein.

Termination
Rights.  If Sublandlord
becomes entitled to terminate the Modified Wilson Lease for any
reason (e.g., because of damage by fire or other peril pursuant to
Section 17.1 of the Modified Wilson Lease), then so long as there
is not then an existing monetary or material non-monetary Event of
Default on the part of Subtenant under the Sublease, Sublandlord
shall not exercise such termination right without first obtaining
Subtenant’s written consent therefor, subject to the
following:

(1)        If
Subtenant refuses to grant such consent, Subtenant agrees to pay
all costs Sublandlord will incur as a result of refraining from
terminating the Modified Wilson Lease that are caused by the
failure of Sublandlord to exercise its termination right and which
would not have occurred had Sublandlord exercised its termination
right (other than the payment of Base Rent and estimated
installments of “Operating Expenses”, consent fees,
review fees and reasonable attorney’s fees incurred in
connection with this termination process).  If such costs are
reasonably estimated by Sublandlord to exceed three (3) months Base
Rent, such prohibition is also conditioned upon Subtenant providing
to Sublandlord security for such payment obligation that is
reasonably satisfactory to Sublandlord.

                       
(2)        If Subtenant also has
a right to terminate the Sublease because of the same events giving
rise to Sublandlord’s right to terminate the Modified Wilson
Lease (e.g., because of the incorporation of Section 17.1 of the
Direct Lease into the Sublease), and if Subtenant exercises such
termination right, (a) Sublandlord may exercise its right to
terminate the Modified Wilson Lease and (b) clause (2) above shall
not apply.

                       
(3)        Subtenant shall provide to
Sublandlord such consents, refusals to consent, elections,
agreements, and/or information as Sublandlord reasonably requests
and are needed by Sublandlord in order for it to determine whether
of not it is prohibited from exercising such termination right, all
to be received by Sublandlord at least seven (7) business days
before the expiration of Sublandlord’s right to
terminate.

                       
(4)        This Section 22E
shall not apply to Sublandlord’s right to terminate this
Sublease as a result of an Event of Default of Subtenant, one of
Sublandlord’s remedies referred to in Section 18
hereof.

Right to
Contest:  If Sublandlord does
not have the right to contest any matter in the Master Lease due to
expiration of any time limit that may be set forth therein or for
any other reason, then notwithstanding any incorporation of any
such provision from the Master Lease into this Sublease, Subtenant
shall also not have the right to contest any such
matter.

Consent to
Sublease:  Notwithstanding
anything to the contrary in this Sublease, this Sublease and
Sublandlord's obligations hereunder are conditioned upon the
execution and delivery of all parties thereto of the Fourth
Amendment and the Consent.  If any of the foregoing conditions is not
satisfied, within thirty (30) days after execution of this Sublease
by Sublandlord, then Sublandlord may terminate this Sublease by
giving Subtenant written notice thereof, and upon such termination
Sublandlord shall return to Subtenant all prepaid rent and the
Security Deposit.  Sublandlord and Subtenant hereby
acknowledge that the Consent contains certain agreements between
the parties thereto that have a direct impact on this Sublease and
the relationship of Sublandlord and Subtenant hereunder, including
the circumstances under which Subtenant must obtain the consent of
Sublandlord.  In the event of a conflict between the
provisions of this Sublease and the Consent, the provisions of the
Consent shall control.  Furthermore, the parties acknowledge
that the incorporation by reference of the provisions of the Direct
Lease into this Sublease may cause Sublandlord to have numerous
approval and consent rights of the “Landlord” under the
Direct Lease; however, notwithstanding such incorporation by
reference, the parties acknowledge and agree that the consent and
approval rights of Sublandlord with respect to the Subleased
Premises during the Sublease Term are governed by the Consent and
Sublandlord’s consent and approval is only required to the
extent required in the Consent.  In addition, the parties
acknowledge that amendments to the Direct Lease may become
incorporated in this Sublease, but only to the extent any such
amendment is permitted pursuant to Section 5B of the
Consent

Amendment:  This
Sublease may not be amended except by the written agreement of
Sublandlord and Subtenant.

No Drafting
Presumption:  The parties
acknowledge that this Sublease has been agreed to by both the
parties, that both Sublandlord and Subtenant have consulted with
attorneys with respect to the terms of this Sublease, and that no
presumption shall be created against Sublandlord because
Sublandlord initially drafted this Sublease.

Entire
Agreement:  This Sublease, the
Consent and the Work Agreement constitute the entire agreement
between the parties with respect to the subject matter hereof, and
there are no binding agreements or representations between the
parties except as expressed in this Sublease, the Consent and the
Work Agreement.  No subsequent change or addition to this
Sublease shall be binding unless in writing and signed by the
parties hereto.

Counterparts:  This
Sublease may be executed in one or more counterparts each of which
shall be deemed an original but all of which together shall
constitute one and the same instrument.  Signature copies may
be detached from the counterparts and attached to a single copy of
this Sublease physically to form one document.

Time:  Time is of the
essence of this Sublease.

         
Sublandlord’s Liability:  Subtenant acknowledges that Sublandlord
is a professional corporation, that the shareholders of Sublandlord
shall not be personally liable under this Sublease, the Consent or
the Work Agreement, and that the contractual limitation of
liabilities set forth in this sentence shall be in addition to any
other limitation of liability that exists under applicable
law.  Subtenant further agrees that to the extent Sublandlord
or any successor Sublandlord is a professional corporation, law
firm partnership, or limited liability partnership, that,
notwithstanding any provisions to the contrary contained in this
Sublease, (a) no present or future partner, member or shareholder
of Sublandlord that is a natural person, and (b) no natural person
that is an owner of a professional corporation that is a partner,
member or shareholder of Sublandlord (as opposed to any
professional corporations that are partners of Sublandlord), shall
have any personal liability to Subtenant for the obligations of
Sublandlord under this Sublease, the Consent or the Work Agreement,
the relationship of Subtenant and Sublandlord, or
Sublandlord’s use of the Subleased Premises as a result of,
without more, such natural person being a partner, member, or
shareholder of Sublandlord or the owner of a professional
corporation that is a partner, member or shareholder of
Sublandlord.  Sublandlord (including any Successor Law Firm as
defined in the Master Lease) shall be solely liable for all of the
obligations of Sublandlord under this Sublease, the Consent or the
Work Agreement to the extent of the assets of Sublandlord,
including, without limitation, the undistributed capital,
undistributed net earnings, undistributed fees earned (including
fees that are either unbilled or billed and uncollected), and
tangible and intangible assets, accounts receivable and personal
property of Sublandlord.  It is understood and agreed that the
non-law firm assets of individual partners, members, or
shareholders of Sublandlord that are natural persons (as
distinguished from the interest in undistributed assets of
Sublandlord of any partner of Sublandlord that is a natural person
and the non-law firm assets of any partner, member, or shareholder
of Sublandlord that is a professional corporation), may not be
seized or attached by Subtenant for the satisfaction of
Sublandlord’s obligations under this Sublease, the Consent or
the Work Agreement.  Notwithstanding the foregoing, Subtenant
acknowledges and agrees that Sublandlord’s client files and
materials covered by the attorney-client privilege also may not be
seized or attached by Subtenant in satisfaction of
Sublandlord’s obligation hereunder.

[Signatures on the following
page.]

IN WITNESS WHEREOF, the parties have executed this Sublease as of the day and
year first above written.

	
SUBLANDLORD:

WILSON SONSINI GOODRICH
& ROSATI,

Professional Corporation

By:    /s/ DONNA M.
PETKANICS 

       Donna M.
Petkanics

       Managing
Director, Operations

By:    /s/ BRADFORD C.
O’BRIEN

       Bradford C.
O’Brien

       Assistant
Secretary

Address:

650 Page Mill Road

Palo Alto, CA 94304-1050

Attn.:  General
Counsel

With a courtesy copy
to:

Wilson Sonsini Goodrich
& Rosati

650 Page Mill
Road

Palo Alto, CA
94304-1050

Attn.: Vice President,
Finance

	
SUBTENANT:

THE TITAN CORPORATION,

a Delaware corporation

By:    /s/ MARK W. SOPP 
 

Print Name: Mark W. Sopp

Title:    Chief Financial
Officer 

Address:

Prior to January 1,
2004:

11225 Waples Mill
Road

Fairfax, VA
22030

Attn: Dean Kershaw and Les
Rose

After January 1,
2004:

11955 Freedom
Drive

Reston, VA 
20190

Attn:  Facilities
Manager

With a courtesy copy (at
all times) to:

The Titan Corporation

3033 Science Park
Drive

San Diego, CA 
92121

Attn:   Director of
Real Estate

and

The Titan
Corporation

3033 Science Park
Drive

San Diego, CA 
92121

Attn:  General
Counsel

EXHIBIT A

Master Lease

[See attached]

EXHIBIT B

Direct Lease

[See attached]

EXHIBIT C

Work Agreement

[See attached]

EXHIBIT
J

WILSON
CONSENT

CONSENT TO
SUBLEASE

THIS CONSENT TO SUBLEASE
(this “Consent”) is made and entered into
as of April 1, 2003 (the “Effective
Date”), by and among TWO FREEDOM SQUARE, L.L.C., a
Delaware limited liability company
(“Landlord”), WILSON SONSINI GOODRICH
& ROSATI, Professional Corporation
(“Tenant”), and THE TITAN CORPORATION, a
Delaware corporation (“Subtenant” or
“Titan”), with reference to the following
recitals:

RECITALS:

A.       
Pursuant to a Deed of Lease dated as of October 6, 2000, as amended
by a First Amendment to Deed of Lease dated as of February 16,
2001, a Second Amendment to Deed of Lease dated as of April 5,
2001, a Third Amendment to Deed of Lease dated as of December 13,
2002, and a Fourth Amendment to Deed of Lease (the
“4th Amendment”) of even date
herewith (collectively, the “Lease”),
Landlord has leased to Tenant certain space (the
“Premises”) in the office building
located at 11955 Freedom Drive, Reston, Virginia (the
“Building”), as more particularly
described in the Lease.  The Lease is attached to this Consent
as Exhibit B to the Sublease that is attached hereto as
Exhibit A and is incorporated herein by
reference.

B.        
Pursuant to Section 7.2 of the Lease, Tenant requests
Landlord’s consent to the Sublease attached hereto as
Exhibit A (the “Sublease”),
pursuant to which Subtenant shall sublease from Tenant, and Tenant
shall sublease to Subtenant, a portion of the Premises comprised of
approximately 107,050 square feet of rentable area located on the
C-1 Concourse Level and 12th, 13th,
14th, 15th, and 16th floors of the
Building, as more particularly described in Exhibit A to the
Sublease (the “Subleased
Premises”).

C.       
Pursuant to a Deed of Lease between Landlord and Titan dated of
even date herewith (the “Titan Lease”),
Landlord is leasing directly to Tenant, and Tenant is leasing
directly from Landlord, approximately 145,995 square feet of
rentable area in the Building (the “Direct Lease
Premises”), as more particularly described in the
Titan Lease.

D.        The
parties acknowledge that Titan’s rights under the Sublease
are derived from the Lease; however, in order to accommodate
Titan’s desire for consistency between Titan’s rights
and obligations with respect to the Direct Lease Premises and its
rights and obligations with respect to the Subleased Premises
(excluding rent and other financial obligations and other rights
and obligations specific to the Titan Lease or the Sublease, as
hereinafter more fully described), the parties have agreed that, so
long as the Sublease remains in effect and has not been terminated,
to the extent there are inconsistencies between such rights and
obligations under the Titan Lease versus corresponding rights and
obligations in the Lease, the terms of the Titan Lease will govern
and control, subject to the terms and conditions more particularly
set forth herein.

NOW, THEREFORE, in
consideration of the mutual covenants and agreements set forth
below, and of other good and valuable consideration, the receipt
and sufficiency of which are hereby acknowledged by the parties
hereto, the parties, intending legally to be bound, hereby agree as
follows:

Consent; Representations.  Landlord hereby consents to the
execution and delivery of the Sublease, subject to the conditions
contained herein.  Landlord and Tenant hereby represent to
Titan that (a) the Lease is in full force and effect and there
exists no default thereunder; and (b) a true and correct copy of
the Lease is attached hereto as Exhibit B to the Sublease. 
Tenant represents to Titan that (x) Tenant has not (i) assigned,
transferred, pledged or encumbered in any way its interest in the
Lease or any rights thereunder or (ii) sublet any portion of the
Subleased Premises.

Primacy of Lease.

Notwithstanding anything in the Sublease to the contrary, the
Sublease is and shall remain in all respects and at all times
subject and subordinate to the Lease (as the same may be amended
from time to time) and to all matters to which the Lease is or
shall be subordinate (including any mortgages, deeds of trust and
ground leases); provided that, so long as the
Sublease is in full force and effect and has not been terminated,
to the extent that there are inconsistencies between the rights and
obligations of the parties under the Titan Lease and the rights and
obligations under the Lease, excluding the Excluded Rights and
Obligations (as hereinafter defined), such inconsistent rights and
obligations under the Lease shall be deemed to have been modified
to conform to the comparable rights and obligations under the Titan
Lease, which shall govern and control (the Lease, as so modified
during the term of the Sublease, being referred to herein as the
"Modified Wilson Lease").  The “Excluded Rights and
Obligations” shall be defined as rights and
obligations with respect to the term, rent, any free rent
concessions or allowances, security deposits or other specific
payment obligations and any other rights and obligations that are
specific to the Titan Lease or the Lease, as applicable, such as
expansion and renewal options, Tenant’s right to sublease or
assign the Lease, and rights and obligations with respect to
“secure areas”, telecommunications and generator
equipment.  Examples of rights and obligations that shall not
be deemed to be Excluded Rights and Obligations include the rights
and responsibilities of the parties with regard to the provision of
utilities and services, repairs, restoration, insurance,
indemnities, use, definition of Operating Expenses, alterations,
remedies, rights upon casualty or condemnation, signage, parking,
assignment and subletting by Subtenant, surrender, hazardous
materials, compliance with Laws, inspection by Landlord, rules and
regulations, late charges, default interest and rights of
set-off.  In no event shall the term, the rental or any
of the other Excluded Rights and Obligations in the Lease be deemed
to have been modified hereby to conform to the Titan Lease. 
Any rights or remedies that Subtenant has under the Sublease are
derived from the Modified Wilson Lease to the extent such rights
and remedies are set forth in the Sublease.  Notwithstanding
anything to the contrary contained herein or in the Sublease,
Subtenant agrees with Landlord to be bound by all of the terms and
conditions of the Modified Wilson Lease during the term of the
Sublease as fully and completely as if Subtenant were the original
tenant under the Modified Wilson Lease (provided that Subtenant
shall not have space-specific obligations with respect to any
portion of the Subleased Premises before such portion has been
delivered to Subtenant); provided, however, Tenant, and not
Subtenant, shall be obligated to pay to Landlord the Base Rent,
additional rent on account of increases in Operating Expenses and
the Security Deposit set forth in the Lease (and Subtenant shall
have obligations as to these matters only as set forth in the
Sublease).  Neither Tenant nor Subtenant shall do or permit
anything to be done in connection with Subtenant’s occupancy
of the Subleased Premises that is inconsistent with, or violates,
any of the terms of the Modified Wilson Lease, except to the extent
permitted by this Consent.  Landlord shall be bound solely by
the terms and conditions of the Modified Wilson Lease (or, as
applicable, the Lease, under the circumstances and to the extent
specifically provided herein) and not by the terms and conditions
of the Sublease; provided, however, except as otherwise
specifically provided in this Consent, Landlord shall have any
rights (but no obligations) specifically allocated to Landlord
pursuant to the Sublease.  To the extent anything contained in
the Modified Wilson Lease or Sublease is in conflict or
inconsistent with the terms of this Consent, the terms of this
Consent shall govern and control.  So long as the Sublease is
in full force and effect and has not been terminated, Tenant agrees
to waive all of its rights to signage as set forth in Article
X of the Lease, except to the extent necessary for
Tenant’s remaining occupancy period for the 15th
floor.

In the event the Sublease is terminated, from and after the
date of termination, Tenant’s obligations shall be determined
by the Lease unaffected by this Consent as to events occurring or
obligations arising under the Lease after such date of
termination.  However, all matters occurring or obligations
arising prior to such date of termination shall be governed by the
Modified Wilson Lease (or, as applicable, the Lease, under the
circumstances and to the extent specifically provided herein)
pursuant to the terms of this Consent, and in this regard (i) any
Alterations and Leasehold Work made by Titan in accordance with the
Modified Wilson Lease (including obtaining Landlord approvals as
required thereunder) prior to any termination of the Sublease shall
not be deemed to violate the Lease after the date of termination;
(ii) any tenant restoration obligations that may be associated with
any such Alteration or Leasehold Work made by Titan shall be the
sole obligation of Titan, which shall survive any such termination,
and shall not be the obligation of Tenant; and (iii) any matter or
action done in compliance with the Modified Wilson Lease and this
Consent prior to such date of termination may not be the basis for
an Event of Default under the Lease after such date of
termination.  Notwithstanding any of the foregoing to the
contrary, if Titan properly terminates the Sublease on account of a
casualty or condemnation, then Tenant shall have the termination
rights pursuant to the Modified Wilson Lease (rather than the
Wilson Lease) with respect to such casualty or condemnation,
notwithstanding the termination of the Sublease.  It is
understood and agreed that a proper termination of the Modified
Wilson Lease resulting from casualty or condemnation shall
constitute a proper termination under the Lease.

Tenant Liability.  This Consent shall in no way constitute
a waiver or release of Tenant from its liabilities and
responsibilities under the Lease except that the Lease and Sublease
are modified by, and subject to, the following rules so long as the
Titan Sublease has not been terminated:

Tenant remains responsible for the payment to Landlord of Base
Rent due under the Lease, regardless of Subtenant’s
performance (subject to any periods of rent abatement to which
Tenant is entitled under the Modified Wilson Lease).

Tenant remains responsible for the payment
to Landlord of Additional Rent on account of increases in Operating
Expenses over a 2002 base year (notwithstanding the 2003 base year
that is applicable to Subtenant under the Sublease), regardless of
Subtenant's performance; provided that, such Additional Rent shall
be calculated in accordance with the definition of Operating
Expenses as set forth in Article IV of the Modified Wilson
Lease;and provided further that, so long as the Sublease
has not been terminated, Landlord agrees to abate a portion of the
Additional Rent that would otherwise be payable by Tenant for the
period January 1, 2004 through June 30, 2004, equal to the portion
thereof that is attributable to increases in Operating Expenses
from 2003 to 2004.  In other words, Tenant shall continue,
during the abatement period, to pay its pro rata share of increases
in Operating Expenses over the 2002 base year Operating Expenses,
but shall only pay for increases as if Operating Expenses during
such abatement period were equal to actual Operating Expenses
incurred in 2003.  Following the abatement period, Tenant
shall resume paying Additional Rent as originally set forth in the
Lease.

As further provided in Section 7 hereof, to the extent
the Sublease obligates Tenant, in its role as
“Landlord” under the Sublease, to perform obligations
or to cause Landlord to perform obligations (e.g.,
maintenance, repair, compliance with Law) or provide services
(e.g., janitorial, electricity, HVAC, other utilities,
security, parking) or rights (e.g., audit) to Subtenant,
then, provided the same are not inconsistent with Landlord’s
rights and obligations under the Modified Wilson Lease
(i) Landlord shall be responsible to do so for the benefit of
Tenant and Subtenant so long as Tenant does not interfere with
Landlord’s ability to do so, and Tenant hereby covenants not
to interfere; and (ii) Tenant’s obligation with respect
to performing such obligations or providing such services or rights
shall be limited to taking such action as is reasonably requested
by Subtenant to compel Landlord’s performance or recover
damages for non-performance, the reasonable cost of which
enforcement incurred by Tenant shall be paid by Subtenant to the
extent not recovered from Landlord, and Tenant shall not be liable
for Landlord’s nonperformance. 

Landlord will accept performance by Subtenant of Tenant’s
obligations under the Modified Wilson Lease as full performance by
Tenant of its obligations under the Modified Wilson Lease.  An
Event of Default of Tenant may only exist under the Lease if an
event occurs which would become an Event of Default under the
Modified Wilson Lease with appropriate notice to Tenant and
Subtenant, the passage of time, or both (subject to the provisions
of Section 8 hereof).  This Section 3(D) shall
not apply to an Event of Bankruptcy of Subtenant (which is not a
default under the Lease but is a default under the Sublease) or any
of the following, which shall be governed only by the Lease: 
(i) Tenant’s obligation to pay Base Rent, additional rent on
account of Operating Expenses, the Security Deposit and any other
Excluded Rights and Obligations of Tenant under the Lease; (ii) any
obligation under the Lease that only Tenant can perform and for
which there is not a corresponding or substantially similar
obligation of Subtenant under the Sublease that provides
substantially the same benefit to Landlord; and (iii) an Event of
Bankruptcy of Tenant (which is a default under the
Lease). 

If Subtenant does not perform any of the obligations of Tenant
under the Modified Wilson Lease, Tenant shall nevertheless have the
continuing obligation to do so, and performance by Tenant shall be
accepted by Landlord as if Subtenant had performed such obligations
(subject to the notice and cure rights set forth in the Modified
Wilson Lease, as modified hereby).

The parties acknowledge that pursuant to
the Titan Lease, Titan has the right to add the Subleased Premises
to the premises leased pursuant to the Titan Lease as of the
expiration of the term of the Sublease, and that pursuant to the
4th Amendment, Tenant has subordinated its right to
renew the term of the Lease to such rights granted to Titan. 
If Titan fails to exercise such right and fails to timely vacate
the Subleased Premises at the expiration of the term of the
Sublease, then (i) Titan shall be deemed to be a holdover tenant
with respect to the Subleased Premises, (ii) Landlord shall have
all of the same rights on account thereof that are reserved to
Landlord in the event of Titan’s holding over with respect to
the Direct Lease Premises, as set forth in the Titan Lease, and
(iii) Tenant will not be deemed to be holding over and shall have
no liability to Landlord on account of any such holding over by
Titan.

No Further Transfer.  This Consent shall not be deemed to
be an authorization for or consent to any further or other
assignment or subletting of all or any part of the Subleased
Premises.  With respect to any assignment
or subletting by Tenant, the rights and obligations of Tenant and
Landlord shall be determined by the Lease, as modified by this
Consent.  With respect to any assignment or subletting by
Subtenant (or anyone entitled to claim lease rights through
Subtenant), the rights and obligations of Landlord, Tenant and
Subtenant shall be determined by the Sublease, the Modified Wilson
Lease and this Consent.  Subtenant agrees that it will
not assign or encumber, or permit to be encumbered, its rights or
interests under the Sublease, nor sublet the whole or any part of
the Subleased Premises, without the prior written consent of
Landlord, which consent shall be granted or withheld only in
accordance with the procedures and standards for approving
subleases and assignments, and subject to Landlord’s
recapture and profit sharing rights, as set forth in the Modified
Wilson Lease; provided that, the Subleased Premises and the Direct
Lease Premises shall be aggregated for purposes of determining
whether the 50% threshold relevant to Landlord’s and
Tenant’s ability to recapture has been reached.  If a
proposed sub-subleasing would cause the 50% threshold to be
exceeded, Landlord and Tenant shall each have the right to
recapture the portion of the space proposed to be sub-sublet that
is within the Direct Lease Premises and the Subleased Premises,
respectively.  In regard to “profit sharing” as
defined in Section 7.2(e) of the Modified Wilson Lease,
“proceeds” (as used therein) shall be deemed to include
proceeds derived from subletting, as well as the proceeds from
sub-subletting.  Tenant shall have no obligation to profit
share with Landlord unless and until the amount of the proceeds
derived from subletting and the proceeds derived from
sub-subletting, in the aggregate, exceed the threshold set forth in
Section 7.2(e)(1) of the Modified Wilson Lease.  By way of
example, assume Tenant’s rent is then $40.00 per rentable
square foot, Subtenant’s rent is then $20.00 per rentable
square foot, and Subtenant sub-subleases the Subleased Premises for
$45.00 per rentable square foot.  Assume Subtenant incurs
costs of $3.00 per rentable square foot, which results in net
proceeds to Subtenant of $42.00 per rentable square foot. 
Based on these assumptions and the requirement under the Sublease
that Tenant and Subtenant share “proceeds” resulting
from sub-subletting, Tenant receives an additional $11.00 per
rentable square foot derived from the sub-sublease.  Tenant
owes no “profits” to Landlord because Tenant has
received an amount in the aggregate (i.e., $20.00 plus $11.00) that
is less than Tenant’s then rent under the Lease
($40.00).  Any request for approval delivered to Tenant
pursuant to the Sublease shall simultaneously be delivered to
Landlord such that Landlord’s and Tenant’s approval
periods run concurrently.  Notwithstanding the foregoing,
subject to the provisions of the Modified Wilson Lease, Subtenant
may assign the Sublease, or sublease all or any part of the
Subleased Premises, without obtaining Landlord’s consent if
such assignment or sublease is one for which Landlord’s
consent is not required under the Modified Wilson Lease (e.g.,
assignments resulting from the merger, consolidation, or other
corporate reorganization of Subtenant, or the sale or transfer of
the capital stock of Subtenant as set forth in Section 7.1(a) of
the Modified Wilson Lease; and assignments and/or subleases to an
Affiliate of Subtenant or a Parent of Subtenant as set forth in
Section 7.5), provided that references to “Tenant” in
Article VII of the Modified Wilson Lease shall be deemed references
to “Subtenant”. 

Consents and Approvals:  During the term of the Sublease,
Landlord shall continue to have all of the rights of approval and
consent set forth in the Modified Wilson Lease, and Tenant shall
have the rights of approval and consent set forth in the Sublease,
subject to the following terms and conditions:

If Landlord grants an approval or consent or grants an approval
or consent subject to conditions, Tenant, if Subtenant so requests,
shall grant the same approval within the applicable time period
under the Sublease unless it reasonably determines any of the
following, in which event it may within the applicable time period
under the Sublease grant or withhold its approval as it reasonably
determines is required or permitted by the Sublease: 
(i) Landlord’s action is in bad faith or in violation of
its obligations under the Modified Wilson Lease or this Consent; or
(ii) Landlord is not obligated to give the approval and the
approval could have a material and adverse effect on Tenant or on
Tenant’s interest in the Subleased Premises.

Notwithstanding anything contained herein
to the contrary, the parties agree that Titan and Landlord may
enter into amendments to the Titan Lease (thereby amending the
Modified Wilson Lease), and Titan may obtain Landlord’s
consent, approval, or waiver of matters under the Modified Wilson
Lease, all without Tenant's prior consent, but only with respect to
matters arising under the Permitted Modification Sections (as
hereinafter defined); provided that, Tenant is hereby released by
Landlord and Titan from any new Tenant liability or increase in any
existing Tenant liability that may result from any such amendment,
consent, approval or waiver, and provided further that, Titan
acknowledges and agrees that Landlord shall be entitled to take
into account such release of Tenant when deciding whether or not to
grant any such consent, approval, waiver or amendment.  If
notwithstanding the foregoing release of Tenant, Landlord
reasonably determines that any such consent, approval, waiver or
amendment could have a material adverse effect on Tenant, then such
matter shall require the prior written consent of Tenant (to the
extent required of Tenant and in accordance with the standards set
forth in the Modified Wilson Lease, it being understood that Tenant
shall not be obligated to approve any waivers or amendments that
Tenant reasonably determines could have a material adverse effect
on it, taking into account the release).  Tenant shall have
the right to waive its right to approve such matter, and if it
waives such right, then its consent shall not be required and the
release shall apply and Tenant shall thereby assume the risk of any
material adverse effect on it that may result notwithstanding the
release.  If Tenant does not waive such right of approval and
Tenant’s consent is granted, then the foregoing release shall
not be applicable to such consent, approval, waiver or
amendment.  Subtenant shall promptly provide Tenant written
notice of any waiver or amendment that is granted by Landlord,
whether or not Tenant’s prior written consent shall have been
required.  For purposes hereof, the term "Permitted
Modification Sections" shall mean the following articles of the
Modified Wilson Lease:  VI [Use of Premises];
VIII [Tenant’s Maintenance and Repairs]; X
[Signs and Furnishings]; XI [Tenant’s Equipment];
XII [Inspection by Landlord]; XIV [Services and
Utilities]; XVI [Rules and Regulations]; XVII [Damage
or Destruction]; XVIII [Condemnation]; XXIV
[Parking]; XXV [General Provisions]; and XIX [Default
by Tenant], but, as to Article XIX, only with respect to waivers
that neither involve the payment of rent nor materially and
adversely affect Tenant or its interest in the Subleased Premises,
taking into account any applicable release, cure or other relevant
matter; provided that, modifications to any of the Permitted
Modification Sections may not thereby (directly or otherwise)
modify another provision of the Modified Wilson Lease that is not
contained in any one of the Permitted Modification Sections. 
The parties hereto acknowledge and agree that the foregoing does
not preclude any subtenant or assignee of Subtenant from benefiting
from modifications to any of the Permitted Modification
Sections. 

Except as otherwise provided in this Section 5, Tenant
hereby retains all approval and consent rights granted by the
Sublease and the discretion to grant waivers or modify the
Sublease, unrestricted by this Consent.

           
D.        Except as permitted in
the Modified Wilson Lease, no alterations, additions, or physical
changes shall be made in the Subleased Premises without
Landlord’s and Tenant’s prior written consent in each
instance, which consent shall be governed by the standards set
forth in the Modified Wilson Lease and this Consent.  In the case of the initial improvements to the
Subleased Premises, such consent shall be granted or withheld
subject to the standards and otherwise in accordance with the terms
of that certain Work Agreement of even date herewith by and among
Landlord, Tenant and Titan, which is attached hereto as Exhibit
B and incorporated herein by this reference (the "Work
Agreement").  Subsequent alterations, additions or
physical changes to the Subleased Premises shall similarly be
subject to approval by Landlord and Tenant, which approval shall be
granted or withheld in accordance with the terms of the Modified
Wilson Lease; provided that, Tenant shall be deemed to have
approved any alteration, addition or physical change that is not a
Substantial Alteration (as hereinafter defined), without obtaining
Tenant’s consent, and provided further that, with respect to
Substantial Alterations, Tenant will not withhold its consent to
any such alterations, additions or changes if Landlord approves the
same and Landlord has, in good faith, applied substantially uniform
standards of approval to the Direct Lease Premises and the
Subleased Premises (i.e., Landlord has not approved an
alteration in the Subleased Premises that it has disapproved or
would disapprove if requested with respect to the Direct Lease
Premises) and the alterations, additions or changes are either (i)
comparable to improvements landlords have generally permitted in
other Class A office buildings in the Washington, D.C. metropolitan
area, or (ii) comparable to improvements Titan has made in other
Class A office buildings of not less than 100,000 square feet in
which it leases space in the United States.  For purposes
hereof, an alteration, addition or physical change shall be deemed
to be a “Substantial Alteration” if the cost
thereof exceeds the product of Fifteen Dollars ($15) multiplied by
the number of square feet of rentable area directly affected by the
alteration, addition or change.  If Tenant fails to approve or
disapprove any Substantial Alteration within ten (10) Business Days
following receipt of a request for approval, Tenant shall be deemed
to have approved such Substantial Alteration.  Except as
specifically provided in this subparagraph, Tenant shall not be
liable to either Landlord or Titan (i) for any failure of Subtenant
to perform its obligations under the Modified Wilson Lease with
respect to the making of any alterations by Subtenant, (ii) for the
cost of any alterations made by Subtenant, or (iii) for any defect
in design, construction, or equipment installed, injury to persons,
damage to property, failure to comply with applicable Laws, or
mechanic's lien claims arising or resulting from the making of any
such alterations by Subtenant.

No Representations or Modification.  Nothing contained in
the Sublease or this Consent shall:  (a) constitute a
representation or warranty on behalf of Landlord, except as set
forth in Sections 1 and 15 above; (b) except as otherwise
specifically set forth in this Consent, waive or release Tenant or
any person or entity claiming by, through or under Tenant
(including Subtenant) from any of its obligations under the Lease
or any other document affecting the Premises, or waive any present
or future default of Tenant under the Lease; or (c) except as
otherwise specifically set forth in this Consent, modify, waive,
amend or affect any provisions, covenants or conditions of the
Lease or any rights or remedies of Landlord thereunder. 

Direct Obligations between Landlord and Subtenant. 
Landlord acknowledges and agrees that it will be directly liable
and responsible to Subtenant to comply with and to perform all of
the obligations, covenants, responsibilities and indemnities of
Landlord under the Modified Wilson Lease, and Subtenant shall have
remedies directly against Landlord for any breach thereof. 
Furthermore, Landlord and Subtenant acknowledge and agree that
Subtenant shall have the right to request directly from Landlord
those operational services that may otherwise be requested by
Tenant of Landlord under the Modified Wilson Lease, including
maintenance work order, changing directory listings, scheduling
deliveries, coordinating parking and supplemental heating,
air-conditioning and ventilation services.  Landlord agrees
that Subtenant and the Subleased Premises shall enjoy and have the
benefit of Landlord’s maintenance, repair and other
operational obligations under the Modified Wilson Lease.  In
connection with any such services directly requested of Landlord by
Subtenant, (i) any charges for such services shall be payable
directly by Subtenant to Landlord and shall constitute additional
rent under the Titan Lease, (ii) any failure to timely pay any of
such charges shall constitute a default hereunder and under the
Titan Lease (subject to the notice and cure rights contained
therein), and shall not constitute a default under the Lease, and
(iii) Tenant shall have no liability or obligation to Landlord or
Subtenant with respect to such services directly requested by
Subtenant.

Default. 

Any breach or violation of any provisions of the Sublease, the
Modified Wilson Lease or this Consent by Subtenant or Landlord
(whether by act or omission) shall be deemed to be and shall
constitute a default in fulfilling such provision and, in such
event, the non-defaulting party shall have all the rights, powers
and remedies provided in the Modified Wilson Lease or at law or in
equity with respect to defaults under the Modified Wilson
Lease.    Similarly, any such
default shall be subject to the notice and cure periods set forth
in the Modified Wilson Lease, and shall constitute an
“Event of Default” if not cured within
the notice and cure periods set forth in the Modified Wilson
Lease.  An Event of Default by Subtenant or Landlord
hereunder, or under the Sublease or the Modified Wilson Lease shall
constitute an Event of Default by such defaulting party under the
Titan Lease. 

Should any default occur on the part of Subtenant under the
Sublease or this Consent that is or could result in an Event of
Default by Tenant under the Modified Wilson Lease, Landlord shall
give Tenant written notice thereof concurrently with
Landlord’s written notice of default given to
Subtenant.  In the case of monetary defaults, Tenant shall be
afforded five (5) days longer than the cure period provided to
Subtenant in which to cure the default.  In the case of a
non-monetary default, Tenant shall be afforded twenty (20) days
longer than the cure period provided to Subtenant in which to cure
such default; provided that, Tenant shall have an additional
reasonable time after the expiration of such cure period within
which to remedy such default, provided (i) Tenant shall have
promptly commenced and thereafter diligently pursues the cure to
completion, (ii) Tenant shall have fully cured any other
outstanding defaults within the applicable cure periods therefor
and shall continue to pay currently all monetary obligations as and
when the same are due, and (iii) Tenant shall have given Landlord
written notice that Tenant intends to take action to enforce
remedies against Subtenant pursuant to the Sublease and, unless
prevented by operation of law, shall have commenced action to
enforce its remedies to enable it to cure such default, and shall
thereafter diligently and continuously prosecute such remedies to
completion.  Further, in the case of a non-monetary Event of
Default that in the nature thereof cannot be remedied by Tenant,
the same shall not constitute an Event of Default under the
Modified Wilson Lease provided (i) within thirty (30) days
following Tenant’s receipt of the notice of default from
Landlord, Tenant shall have (x) given Subtenant written notice
terminating the Sublease and (y) commenced legal action or other
appropriate proceedings to enforce its remedy of termination
against Subtenant under the Sublease, and Tenant shall thereafter
diligently and continuously prosecute any such proceedings to
completion; (ii) Tenant shall have fully cured any other defaults
within the applicable cure periods therefor and shall thereafter
continue to faithfully perform all monetary obligations as and when
the same are due; and (iii) after gaining possession of the
Subleased Premises, Tenant shall perform all of the obligations of
Tenant under the Lease as and when the same are due and cure any
defaults that are curable by Tenant but that require possession of
the Premises to cure, such cure to be effected within twenty (20)
days after gaining possession, or such longer period of time as is
reasonably necessary to effect such cure using all due
diligence.  In addition to the concurrent
notices of Subtenant default required to be given to Tenant
pursuant to this Section, if a default notice has not been given to
Subtenant, Landlord shall nevertheless endeavor, in good faith, to
(a) notify Tenant, within thirty (30) days after delinquency, of
any default by Subtenant in the payment of a monetary obligation in
excess of $20,000 for which Tenant is also liable to Landlord; and
(b) notify Tenant of any material non-monetary default by Subtenant
in the performance of any obligation for which Tenant is also
liable to Landlord, within sixty (60) days after Landlord has
actual knowledge of such default.

Tenant’s obligations under this Consent shall be deemed
to be obligations under, and shall amend, the Modified Wilson Lease
and the Lease, as applicable, and any default by Tenant in the
performance of such obligations shall be subject to the notice and
cure rights and Landlord remedies set forth in the Modified Wilson
Lease and the Lease, as applicable.

Landlord’s Receipt of Payments from Subtenant. 
Landlord agrees to receive directly from Subtenant all sums due or
payable to Tenant by Subtenant pursuant to the Sublease on account
of Base Rent or additional rent on account of increases in
Operating Expenses, and Subtenant agrees to pay all such sums
directly to Landlord.  Tenant shall receive from Landlord a
corresponding credit for such sums against any and all payments
then due or thereafter becoming due from Tenant.  The receipt
of such direct payments shall not cause Landlord to assume any of
Tenant’s duties, obligations or liabilities under the
Sublease.

Brokers.  All parties hereto represent and warrant that
they have dealt with no broker, finder, or agent or other person in
connection with the Sublease other than those persons identified in
Section 20 of the Sublease (the
“Brokers”).  Tenant shall pay any
commission or other compensation owed to the Brokers in connection
with the Sublease in accordance with the written agreements between
Tenant and such Brokers.  Tenant and Subtenant agree to
indemnify and hold Landlord harmless from and against any claims or
causes of action for a commission or other form of compensation
arising from the Sublease, except for any other broker that may
have been engaged by Landlord.  The provisions of this Section
10 shall survive the expiration or earlier termination of the
Sublease.

Notices.  Subtenant shall simultaneously deliver a copy to
Landlord of all notices sent to Tenant pursuant hereto or pursuant
to the Sublease, Tenant shall simultaneously deliver a copy to
Landlord of all notices sent to Subtenant pursuant hereto or
pursuant to the Sublease, and Landlord shall simultaneously deliver
a copy to Subtenant of all notices sent to Tenant pursuant hereto
or pursuant to the Modified Wilson Lease (including, but not
limited to, statements and reconciliations of annual Operating
Expenses and additional rent payable on account thereof), in the
manner required for notices under the Modified Wilson Lease (except
that notices to Subtenant shall be given to the addresses specified
in the Titan Lease).

Sublease.  Tenant and Subtenant hereby represent to
Landlord that the Sublease attached to this Consent as Exhibit A
constitutes the entire agreement between the parties and no premium
or other consideration is being paid to Tenant or for the benefit
of Tenant in connection with the Sublease except as specifically
stated in the Sublease.  Notwithstanding anything to the
contrary contained in the Lease or the Sublease, Tenant and
Subtenant shall not, without the prior written consent of Landlord
in each instance (which consent shall not be unreasonably withheld,
conditioned or delayed), execute any amendment to or modification
or extension of the Sublease, and any amendment or modification
entered into without such consent shall be void and of no force or
effect.

No Modification.  This Consent constitutes the entire
agreement of the parties hereto with respect to the matters stated
herein.  This Consent may not be altered, amended, modified or
changed orally, but only by an agreement in writing signed by all
of the parties hereto.

Termination of Lease; Non-Disturbance and Attornment.  If,
at any time prior to the expiration or earlier termination of the
term of the Sublease, the Lease (or Tenant's right to possession)
shall expire or be sooner terminated for any reason, then the
Sublease shall simultaneously terminate and Subtenant shall vacate
the Subleased Premises on or before the date of termination, any
notice to quit being hereby expressly waived by Subtenant. 
Notwithstanding any of the foregoing, upon any such termination of
the Lease, so long as Subtenant is not in default beyond any
applicable grace or cure period in the payment of rent or in the
performance of any of the other material terms, covenants or
conditions of the Sublease, the Modified Wilson Lease, this Consent
or the Titan Lease, Subtenant's possession and occupancy of the
Subleased Premises shall not be terminated, interfered with or
disturbed by Landlord during the remainder of the term of the
Sublease, and in such event Subtenant shall attorn to Landlord for
the remainder of the term of the Sublease, such attornment to be
upon all of the terms and conditions as the Modified Wilson Lease,
as modified to reflect the rent obligations set forth in the
Sublease, except that the annual base rent payable by Subtenant
shall increase to an amount equal to the sum of (i) the product of
One Dollar ($1.00), multiplied by the number of square feet of
rentable area in the Subleased Premises, plus (ii) the annual base
rent then payable by Subtenant to Tenant under the Sublease. 
Each of Subtenant and Landlord agrees to execute from time to time
documents reasonably satisfactory to the other in confirmation of
said attornment and non-disturbance.  The provisions of this
Section 14 shall be self-operative and shall apply notwithstanding
the fact that, as a matter of law, the Sublease may otherwise
terminate upon the termination of the Lease.  Nothing
contained in this Section 14 shall be construed to impair or modify
any right otherwise exercisable by Landlord or Subtenant, whether
under the Lease, the Modified Wilson Lease or any other agreement,
at law or in equity.  Following any such
termination of the Lease and attornment, any Event of Default by
Tenant or Landlord hereunder or under the Modified Wilson Lease
shall constitute an Event of Default under the Titan Lease, and any
Event of Default by Tenant or Landlord under the Titan Lease shall
constitute an Event of Default hereunder and under the Modified
Wilson Lease.

Ratification.  By executing this Consent, Landlord, Tenant
and Subtenant acknowledge and agree to be bound by all of the terms
and conditions of this Consent.  As further inducement for
Landlord to grant its consent to the Sublease, Tenant represents
and warrants to Landlord and Subtenant, as of the date hereof, that
Tenant has no claims, counterclaims, defenses or set-offs against
Landlord arising from or out of a breach or default by Landlord
under or relating to the Lease, that neither Landlord nor Tenant is
in default under any terms of the Lease, nor has any event occurred
which, with the passage of time or giving of notice (or both), will
constitute an Event of Default under the Lease.  Landlord
represents and warrants to Tenant and Subtenant, as of the date
hereof, that neither Landlord nor Tenant is in default under any
terms of the Lease, nor has any event occurred which, with the
passage of time or giving of notice (or both), will constitute an
Event of Default under the Lease.

Insurance.  Subtenant’s insurance referred to in
Section 16 of the Sublease shall name, in addition to Landlord,
Landlord’s Members (“Boston Properties Limited
Partnership” and “Terrabrook Two Freedom Square,
LLC”) and Landlord’s lender as additional
insureds.  Subtenant hereby waives and
releases Landlord and the holder of any mortgage from any and all
liabilities, claims and losses for which Landlord is or may be held
liable to the extent Subtenant either is required to maintain
insurance pursuant to the Sublease or the Modified Wilson Lease, as
applicable, or receives insurance proceeds on account
thereof.  Landlord hereby waives and releases Subtenant from
any and all liabilities, claims and losses for which Subtenant is
or may be held liable to the extent Landlord either is required to
maintain insurance pursuant to the Modified Wilson Lease or
receives insurance proceeds on account thereof.  Both parties
shall secure waiver of subrogation endorsements from their
respective insurance carriers as to the other party.

Expansion Rights.  The parties hereto acknowledge and
agree that pursuant to the 4th Amendment, Tenant has
subordinated all of its expansion rights under the Lease to
Titan’s expansion rights as set forth in the Titan Lease, as
it may be amended, amended and restated or replaced from time to
time.  In no event shall Titan have the right to exercise any
such Tenant expansion rights by virtue of the Sublease, this
Consent or otherwise, Titan’s expansion rights being limited
to the rights set forth in the Titan Lease.  It is further
acknowledged that so long as the Sublease has not been terminated,
the subleasing of the Subleased Premises pursuant to the Sublease
renders Tenant’s rights pursuant to Section 26.3 of the Lease
unexercisable by their terms.

Counterparts.  This Consent may be executed in counterpart
copies, each of which shall constitute an original and all of which
together shall constitute one agreement.

Choice of Law.  This Consent shall for all purposes be
construed in accordance with and governed by the laws of the
Commonwealth of Virginia, excluding the choice of law provisions
thereof.

[Signatures on
following page]

IN WITNESS
WHEREOF, the parties hereto have executed this Consent to Sublease
as of the date first above written.

LANDLORD:

TWO FREEDOM SQUARE,
L.L.C.

By: 
          BOSTON
PROPERTIES LIMITED
                                                  
PARTNERSHIP, a Delaware limited partnership

By:       BOSTON
PROPERTIES, INC.,

a Delaware corporation,
its sole

general partner

By:        /s/
RAYMOND A. RITCHEY [SEAL]

Name:    Raymond A. Ritchey

Title:     Executive Vice President

By: 
          TERRABROOK
TWO FREEDOM

 SQUARE, L.L.C., a Delaware limited

 liability company, member

By:        /s/ THOMAS A.
WILLIAMSON [SEAL]

Name: Thomas A. Williamson

Title:   Vice President

                                                                       
TENANT:

                                                                       
WILSON SONSINI, GOODRICH & ROSATI,

                                                                        
Professional Corporation

                                                                       
By:    /s/ DONNA M. PETKANICS

                                                                                   
Donna M. Petkanics

                                                                                   
Managing Director, Operations

                                                                       
By:    /s/ BRADFORD C. O’BRIEN

                                                                                   
Bradford C. O’Brien

                                                                                   
Assistant Secretary

SUBTENANT:

                                                                       
THE TITAN CORPORATION, a

                                                                        
Delaware corporation

                                                                       
By:       /s/ MARK W. SOPP
[SEAL]

                                                                       
Name:  Mark W. Sopp

                                                                       
Title:     Chief Financial
Officer

           

Attachments:

Exhibit A --
Executed Copy of Sublease

Exhibit B -- Executed Copy of Work Agreement

EXHIBIT
K

FORM OF
CONSENT TO SUBLEASE

TWO FREEDOM SQUARE,
L.L.C., a Delaware limited liability company, as landlord
("Landlord") under that certain Lease with THE TITAN
CORPORATION, a
              
  corporation, as tenant ("Tenant") dated as of March
__, 2003 (the "Lease"), respecting premises in the office
building commonly known as “Two Freedom Square”,
located at 11955 Freedom Drive, Reston, Virginia (the
“Building”), hereby acknowledges and consents to
the execution and delivery of the attached Sublease (the
"Sublease") dated ________________, 20__, between Tenant and
______________, a ________________ ("Subtenant"), subject to
and conditioned upon the following:

A.       
Notwithstanding the foregoing acknowledgment and consent, (i)
Landlord is not, and shall not be nor become, a party to the
Sublease, (ii) except as otherwise provided herein, Landlord's
consent does not and shall not create any contractual liability,
obligation or duty on the part of Landlord to Subtenant or in any
manner affect the rights and obligations of Landlord and Tenant
under the Lease, (iii) Landlord's consent does not and shall not
mean or imply that Landlord makes, has made or will make to
Subtenant any of the representations or certifications set forth
explicitly or incorporated by reference in the Sublease, (iv)
Landlord's consent does not and shall not impose nor create any
additional burden or obligation on Landlord to Tenant and does not
modify or alter Landlord's obligations to Tenant under the Lease,
and (v) Tenant is not and shall not be relieved of or released from
any liability for the performance of the terms, conditions,
covenants, obligations and duties of Tenant under the Lease,
whether occurring prior or subsequent to the effective date of the
Sublease, including, without limitation, the obligation to pay rent
under the Lease, and Tenant shall pay directly to Landlord all rent
and other sums due to Landlord under the Lease.

B.        
Subtenant acknowledges that any rights or remedies it has under the
Sublease are derived from the Lease and, notwithstanding anything
to the contrary contained herein or in the Sublease, Subtenant
agrees to be bound by all of the terms and conditions of the Lease
as fully and completely as if Subtenant were the original tenant
under the Lease (except that Subtenant shall not be obligated to
pay to Landlord the rent set forth in the Lease). 
Notwithstanding anything in the Sublease to the contrary, the
Sublease is and shall remain in all respects subject and
subordinate to the Lease (as the same may be amended) and to all
mortgages relating to the Building.  Landlord shall be bound
solely by the terms and conditions of the Lease and not by the
terms and conditions of the Sublease; however, Landlord shall have
any rights specifically allocated to Landlord pursuant to the
Sublease.

C.       
Subtenant and Tenant hereby represent to Landlord that the Sublease
attached hereto constitutes the entire agreement between the
parties and no premium or other consideration is being paid to
Tenant or for the benefit of Tenant in connection with the Sublease
except as specifically stated herein.  No amendment to the
Sublease shall be effective without the prior written approval of
Landlord.  In no event shall any amendment to the Sublease
affect or modify (or be deemed to affect or modify) the Lease in
any respect.

D.       
Landlord's consent to the Sublease shall not mean that Landlord has
reviewed or approved any plans for Subtenant's space as required
pursuant to the terms of the Sublease and the Lease.  Landlord
shall not review any plans for Subtenant's space unless and until
Subtenant and Tenant shall have provided Landlord with evidence
that any and all plans for Subtenant's space conform to and comply
with the requirements of the Lease.

E.        
Landlord’s consent to the Sublease shall not constitute
consent to any future sublease or assignment.

F.        
Subtenant’s insurance referred to in Article __ of the
Sublease shall name, in addition to Landlord, Landlord’s
Manager (“Boston Properties Limited
Partnership”) and Landlord’s lender as
additional insureds.

[Signature Page Follows]

IN WITNESS WHEREOF, the
parties hereto have executed this Consent to Sublease as of the ___
day of ______________, 20__.

LANDLORD:

TWO FREEDOM SQUARE,
L.L.C.

By: 
          BOSTON
PROPERTIES LIMITED
                                                  
PARTNERSHIP, a Delaware limited partnership

                
By:       BOSTON PROPERTIES,
INC.,

                
a Delaware corporation, its sole

 general partner

By:    
__________________[SEAL]

           
Name: ________________________

           
Title:   ________________________

                                                                       
By:       TERRABROOK TWO FREEDOM

                                                                                    
SQUARE, L.L.C., a Delaware limited

                                                                                    
liability company, member

                                                                                   
By:     ________________________[SEAL]

                                                                                   
Name: ________________________

                                                                                   
Title:   ________________________

                                                                       
TENANT:

                                                                       
THE TITAN CORPORATION, a
                          

 corporation

WITNESS:

By:      
_________________                         
By:      
____________________________________

Title:    
________________                           
Name:  ____________________________________

                                                                       
Title:    
____________________________________

                                                           
[CORPORATE SEAL]

 Include if lease provides
for reductions in letter of credit.Exhibit 10.3

Exhibit
10.3

EMPLOYMENT
AGREEMENT

           
AGREEMENT, made and entered into as of April 2, 2003 (the
“Effective Date”) by and between The Titan Corporation,
a Delaware corporation (together with its successors and assigns,
the “Company”), and Dr. Gene W. Ray (the
“Executive”).

W I T N E
S S E T H :

           
WHEREAS, the Executive is currently employed as President and Chief
Executive Officer of the Company and also serves as Chairman of the
board of directors of the Company and the Company desires to
continue to have the Executive serve in such positions;

           
WHEREAS, the Company desires to enter into an agreement embodying
the terms of such continued employment (this
“Agreement”) and the Executive desires to enter into
this Agreement and to accept such continued employment, subject to
the terms and provisions of this Agreement;

           
NOW, THEREFORE, in consideration of the premises and mutual
covenants contained herein and for other good and valuable
consideration, the receipt of which is mutually acknowledged, the
Company and the Executive (individually a “Party” and
together the “Parties”) agree as follows:

           
1.        
Definitions.

(a)       
“Accrued Obligations” shall mean:

any earned but unpaid amounts as of the date of termination,
including, but not limited to, Base Salary through the date of
termination, reimbursement for business expenses and any incentive
awards earned for performance periods that have ended;

a Pro-Rata Target Bonus;

any compensation previously deferred by the Executive together
with any vested Company matching contribution and accrued interest
thereon; and

accrued but unpaid vacation days through the date of
termination.

(b)       
“Affiliate” of a specified person or entity shall mean
a person or entity that directly or indirectly controls, is
controlled by, or is under common control with, the person or
entity specified.

(c)       
“Base Salary” shall mean the annualized salary provided
for in Section 4 below or any increased salary granted to the
Executive pursuant to Section 4.

(d)       
“Board” shall mean the Board of Directors of the
Company.

(e)       
“Cause” shall mean:

(i)        
the willful and continued failure of the Executive to perform
substantially the Executive’s duties hereunder (other than
any such failure resulting from incapacity due to physical or
mental illness or following the Executive’s delivery of a
notice that he is terminating his employment for Good Reason),
provided that the Company demonstrates that such failure has a
material and injurious effect on the Company and provided, further,
that a written demand for substantial performance is first
delivered to the Executive by the Board that specifically
identifies the manner in which the Board believes that the
Executive has not substantially performed the Executive’s
duties and the resulting material, injurious effect on the Company;
or

(ii)       
the willful engaging by the Executive in gross misconduct or the
conviction of the Executive of a felony (such conviction having
been finally adjudicated without further appeal) that is materially
and demonstrably injurious to the Company.

           
For the purposes of this definition of “Cause”, no act,
or failure to act, on the part of the Executive shall be considered
“willful” unless it is done, or omitted to be done, by
the Executive in bad faith or without reasonable belief that the
Executive’s action or omission was in the best interests of
the Company.  Any act, or failure to act, based upon authority
given pursuant to a resolution duly adopted by the Board or based
upon advice of counsel for the Company shall be conclusively
presumed to be done, or omitted to be done, by the Executive in
good faith and in the best interests of the Company.

(f)        
“Change of Control” shall have the same meaning as
ascribed to such term in the Executive Change of Control Agreement
between the Executive and the Company dated as of March 2000 (the
“Change of Control
Agreement”).     

(g)       
“Disability” shall mean the Executive’s
inability, due to physical or mental incapacity, to substantially
perform his duties and responsibilities under this Agreement for a
period of six consecutive months as determined by a medical doctor
selected by the Company and the Executive.  If the Parties
cannot agree on a medical doctor, each Party shall select a medical
doctor and the two doctors shall select a third who shall be the
approved medical doctor for this purpose.

(h)       
“Good Reason” shall mean the occurrence of any of the
following events without the prior written consent of the
Executive:

(i)        
the assignment to the Executive of any duties inconsistent in any
respect with the Executive’s positions (including status,
offices, titles and reporting requirements), authority, duties or
responsibilities as contemplated in Section 3(a), or any other
diminution in such positions, authority, duties or responsibilities
(whether or not occurring solely as a result of the Company’s
ceasing to be a publicly traded entity), excluded for this purpose:
(i) an isolated, insubstantial and inadvertent action not taken in
bad faith and that is remedied by the Company promptly after
receipt of notice thereof given by the Executive; and (ii) the
hiring or promotion by the Board of another senior executive with
the title and responsibilities of President.

(ii)       
any failure by the Company to comply with Sections 4, 5, 6 or 7 of
this Agreement, other than an isolated, insubstantial and
inadvertent action not taken in bad faith and that is remedied by
the Company promptly after receipt of notice thereof given by the
Executive;

(iii)       the
Company ceasing to be a publicly traded company, or the
Company’s requiring the Executive to be based at any office
or location other than as provided in Section 3(c);

(iv)       any
purported termination by the Company of the Executive’s
employment otherwise than expressly permitted by this Agreement;
or

(v)        any
failure by the Company to obtain the assumption of its obligations
to perform this Agreement by any successor to all or substantially
all of the assets of the Company, whether by written agreement or
operation of law.

“Pro-Rata Target Bonus” shall mean the Target Bonus
multiplied by a fraction, the numerator of which is the number of
days that the Executive was employed in the applicable performance
period and the denominator of which shall be the number of days in
the applicable performance period.

(j)        
“Target Bonus” shall mean the greater of (i) 80% of
Base Salary and      (ii) the
Executive’s target bonus opportunity for the applicable
year.

(k)       
“Term” shall mean the period specified in Section 2
below (including any extension as provided therein).

           
2.         Term of
Employment.

The term of employment
hereunder shall begin as of the Effective Date, and shall continue
through the third anniversary of the Effective Date (the
“Term”), provided, however, that the Term shall
automatically renew for successive one-year terms, unless either
Party gives written notice to the other party not less than 120
days prior to the expiration of any such term that such Party is
electing not to so extend the Term.  Notwithstanding the
foregoing, the Term shall end on the date on which the
Executive’s employment is earlier terminated by either Party
in accordance with the provisions of Section 9 below.

           
3.         Position,
Duties and Responsibilities; Place of Employment.

(a)       
During the Term, the Executive shall serve as the Chairman of the
Board and as President and Chief Executive Officer of the Company
and shall be responsible for the general management of the affairs
of the Company.  As President and Chief Executive Officer of
the Company, the Executive shall have all authorities, duties and
responsibilities customarily exercised by an individual serving in
those positions in a corporation of the size and nature of the
Company.  The Executive, in carrying out his duties under this
Agreement, shall report to the Board.  During the Term, the
Executive shall devote substantially all of his business time and
attention to the business and affairs of the Company.
Notwithstanding anything to the contrary in this Agreement or
otherwise, the Executive acknowledges and agrees that the Board may
at any time hire or promote another senior executive with the title
and responsibilities of President   in connection with
the Board’s “Key Executive” succession planning
responsibilities.

(b)       
Nothing herein shall preclude the Executive from (i) serving on the
boards of directors of a reasonable number of other corporations
with the concurrence of the Board, (ii) serving on the boards of a
reasonable number of trade associations and/or charitable
organizations, (iii) engaging in charitable activities and
community affairs and (iv) managing his personal investments and
affairs, provided that such activities set forth in this Section
3(b) do not interfere with the effective discharge of his duties
and responsibilities under Section 3(a).

(c)        The
Executive’s principal place of employment shall be San
Diego, California.

           
4.         Base
Salary.

During the Term, the
Executive shall be paid an annualized Base Salary of $800,000,
payable in accordance with the regular payroll practices of the
Company.  The Base Salary shall be reviewed annually for any
increase in the discretion of the Board.

           
5.         Annual
Incentive Awards.

During the Term, the
Executive shall be eligible to participate in the Company’s
annual incentive plan for senior executives (the “Bonus
Plan”), including any supplemental bonus plan.  For the
Bonus Plan, the Executive shall have a target bonus opportunity
each year of up to 80% of Base Salary, based on the achievement of
annual performance objectives approved by the Board.  The
Executive shall be paid his annual incentive awards, including any
supplemental bonus award, at the same time that other senior
executives of the Company are paid such awards, but in no event
more than 90 days after the end of the applicable performance
period.

           
6.         Long-Term
Incentive Programs.

During the Term, the
Executive shall be eligible to participate in any long-term
incentive program of the Company made available to other
senior-level executives generally, including, but not limited to,
the Company’s 2002 Employee and Director Stock Option and
Incentive Plan and the 2002 Employee Stock Purchase
Plan.

           
7.         Employee
Benefit and Retirement Programs; Perquisites;
Vacation.

(a)       
During the Term, the Executive shall be entitled to participate in
all employee pension and welfare benefit plans, programs and
arrangements made available to the Company’s senior-level
executives or to its employees generally on the same terms and
conditions as other senior-level executives, as such plans,
programs or arrangements may be in effect from time to time,
including, without limitation, pension, profit sharing, savings,
estate preservation and other retirement plans or programs, 401(k),
medical, dental, hospitalization, short-term and long-term
disability and life insurance plans, accidental death and
dismemberment protection, travel accident insurance, and all other
pension or retirement plans or programs (including the
Company’s Deferred Compensation Plan) and employee welfare
benefit plans or programs that may be sponsored by the Company from
time to time, including any plans or programs that supplement the
above-listed types of plans or programs, whether funded or
unfunded. The Executive agrees to cooperate with any required
eligibility procedures with respect to such plans, programs and
arrangements, including without limitation customary medical
underwriting procedures.  The Executive shall also be eligible
to participate in the Company’s Supplemental Retirement Plan
for Key Executives, as in effect from time to time.

(b)        The
Executive shall be entitled to receive perquisites provided to
other senior-level executives.

(c)        The
Executive shall be entitled to paid vacation in accordance with
Company policy.

           
8.         Reimbursement
of Business Expenses.

During the Term, the
Executive is authorized to incur reasonable expenses in connection
with carrying out his duties and responsibilities under this
Agreement and the Company shall reimburse him for all such expenses
incurred in connection with carrying out the business of the
Company, subject to documentation in accordance with the
Company’s policy. 

           
9.         Termination
of Employment.

(a)       
Termination without Cause or Termination for Good
Reason.

In the event (x) the
Executive’s employment hereunder as  Chief Executive
Officer of the Company is terminated by the Company without Cause,
other than due to Disability or death, or (y) the Executive
terminates his employment for Good Reason, in each case prior to a
Change in Control, the Executive shall be entitled to the
following:

(i)        
Accrued Obligations;

(ii)        a
lump-sum payment in an amount equal to three times the sum of the
Executive’s (x) Base Salary and (y) Target Bonus for the year
of termination, payable promptly following such
termination;

(iii)      
immediate vesting of any outstanding equity awards, including, but
not limited to, stock options and restricted stock ;(iv) immediate
and full vesting of the Executive’s account balances under
the Company’s 401(k) plan and deferred compensation plan, or
any successor thereto, as of the date that the Executive’s
employment terminates;

(v)       
participation for the Executive (and his eligible dependents) in
the Company’s extended health benefits program for retired
senior executives as in effect from time to time; and

(vi)       any
other entitlement, benefit or compensation due the Executive under
any other applicable plan, program, policy, arrangement of, or
other agreement with, the Company or any of its
Affiliates. 

(b)       
Termination Due to Death or Disability.  In the event
that the Executive’s employment hereunder is terminated due
to his death or Disability, the Executive (or his estate, legal
representatives, or his beneficiaries, as the case may be), shall
be entitled to the following:

(i)        
Accrued Obligations;

(ii)        in
the case of Disability, disability benefits provided in accordance
with the Company’s long-term disability program, if any, in
effect for senior level executives at the Company;

(iii)      
participation for the Executive (and his eligible dependents) in
the Company’s extended health benefits program for retired
senior executives as in effect from time to time;

(iv)      
treatment of any outstanding equity awards in accordance with the
applicable plan and award agreement; and

(v)        any
other entitlement, benefit or compensation due the Executive under
any other applicable plan, program, policy, arrangement of, or
other agreement with, the Company or any of its
Affiliates. 

(c)       
Termination by the Company for Cause.

(i)        
A termination for Cause shall not take effect unless the provisions
of this subclause (i) are complied with.  There shall have
been delivered to the Executive a copy of a resolution duly adopted
by the affirmative vote of not less than three-quarters of the
entire membership of the Board (excluding the Executive) at a
meeting of the Board called and held for such purpose (after
reasonable notice is provided to the Executive and the Executive is
given an opportunity, together with his counsel, to be heard before
the Board), finding that, in the good faith opinion of the Board,
the Executive is guilty of the conduct described in Section 1(e)(i)
or Section 1(e)(ii), and specifying the particulars thereof in
detail.

(ii)        In
the event the Company terminates the Executive’s
employment  for Cause, the Executive shall be entitled
to:

(A)       payment
of Base Salary through the date of termination;

(B)       treatment
of any outstanding equity awards in accordance with the applicable
plan or award agreement; and

(C)       any other
entitlement, benefit or compensation due the Executive under any
other applicable plan, program, policy, arrangement of, or other
agreement with, the Company or any of its Affiliates.

(d)       
Retirement.  The Executive shall be entitled to retire
upon 180 days advance written notice to the Board The Executive
shall be entitled to the payments, benefits and other entitlements
set forth above in Section 9(a) in the event the date of retirement
occurs on or after the third anniversary of the Effective Date of
this Agreement and the Executive provides the required notice. If
the Executive elects to retire before the third anniversary of the
Effective Date of this Agreement, the Executive shall not be
entitled to the payments, benefits and other entitlements set forth
above in Section 9(a), unless the Executive provides the required
notice and the Board approves the granting of such payments,
benefits and other entitlements at that time.

 
(e)       Release of
Claims.  In order to be entitled to the payments, rights
and other entitlements in Section 9(a) or Section 9(d) above, the
Executive shall be required to execute and deliver a release of
claims against the Company in the form of Exhibit A attached
hereto.

(f)        
Nature of Payments.  Any amounts due under this Section
9 are in the nature of severance payments considered to be
reasonable by the Company and are not in the nature of
penalty.

(g)       
Resignation.  Notwithstanding any other provision of
this Agreement, upon the termination of the Executive’s
employment for any reason (other than retirement), unless otherwise
requested by the Board he shall immediately resign from the Board,
from all boards of directors of subsidiaries and Affiliates of the
Company of which he may be a member, and as a trustee of, or
fiduciary to, any employee benefit plan of the Company or any of
its Affiliates. The Executive hereby agrees to execute any and all
documentation of such resignations upon request by the Company, but
he shall be treated for all purposes as having so resigned upon
termination of his employment, regardless of when or whether he
executes any such documentation.

           
10.       Change of
Control.

Anything herein to the
contrary notwithstanding, to the extent applicable, the Executive
shall also be entitled to any compensation, benefit or entitlement
provided pursuant to the Change of Control Agreement, provided that
if any item of compensation or benefit or any entitlement is
provided under this Agreement which is more favorable to the
Executive than the corresponding item of compensation or benefit or
entitlement under the Change of Control Agreement, or if an item of
compensation or benefit or any entitlement is provided under this
Agreement, but not under the Change of Control Agreement, such item
of compensation or benefit or such entitlement, as the case may be,
shall be provided in accordance with the terms of this
Agreement.  In no event, however, shall the Executive be
entitled to duplication as to any item of compensation or benefit
or as to any entitlement that is provided under both this Agreement
and the Change of Control Agreement.  In the case of any such
duplication, the Executive shall be entitled to the provision of
this Agreement or the Change of Control Agreement that is most
favorable to the Executive. 

           
11.       Confidentiality;
Assignment of Rights.

(a)       
During the Term and thereafter, other than in the ordinary course
of performing his duties for the Company or as required in
connection with providing any cooperation to the Company pursuant
to Section 14 below, the Executive agrees that he shall not
disclose to anyone or make use of any trade secret or proprietary
or confidential information of the Company or any Affiliate of the
Company, including such trade secret or proprietary or confidential
information of any customer or other entity to which the Company
owes an obligation not to disclose such information, which he
acquires during the course of his employment, including, but not
limited to, records kept in the ordinary course of business, except
when required to do so by a court of law, by any governmental
agency having supervisory authority over the business of the
Company or by any administrative or legislative body (including a
committee thereof) with apparent or actual jurisdiction to order
him to divulge, disclose or make accessible such information. 
In the event the Executive is requested to disclose information as
contemplated in the preceding sentence, the Executive agrees,
unless otherwise prohibited by law, to give the Company’s
General Counsel prompt written notice of any request for disclosure
in advance of the Executive making such disclosure in order to
permit the Company a reasonable opportunity to challenge such
disclosure.

(b)        The
Executive hereby sells, assigns and transfers to the Company all of
his right, title and interest in and to all inventions,
discoveries, improvements and copyrightable subject matter (the
“rights”) which during the course of his employment are
made or conceived by him, alone or with others, and which are
within or arise out of any general field of the Company’s
business or arise out of any work he performs, or information he
receives regarding the business of the Company, while employed by
the Company.  The Executive shall fully disclose to the
Company as promptly as available all information known or possessed
by him concerning the rights referred to in the preceding sentence,
and upon request by the Company and without any further
remuneration in any form to him by the Company, but at the expense
of the Company, execute all applications for patents and for
copyright registration, assignments thereof and other instruments
and do all things which the Company may deem necessary to vest and
maintain in it the entire right, title and interest in and to all
such rights.

(c)        The
Executive agrees that at the time of the termination of employment,
whether at the instance of the Executive or the Company, and
regardless of the reasons therefor, he will deliver to the Company,
and not keep or deliver to anyone else, any and all notes, files,
memoranda, papers and, in general, any and all physical matter and
computer files containing information, including any and all
documents relating to the conduct of the business of the Company or
any of its Affiliates which are in his possession or control,
except for (i) any documents for which the Company has given
written consent to removal at the time of termination of the
Executive’s employment, (ii) papers and other materials of a
personal nature, including, but not limited to, photographs,
correspondence, personal diaries, calendars and Rolodexes, (iii)
any information the Executive reasonably believes may be necessary
for his tax purposes and (iv) copies of plans, programs and
agreements relating to his employment or termination thereof, with
the Company.

           
12.       Non-Competition;
Non-Solicitation.

(a)       
During the Term and until the third anniversary of the date of
termination of the Executive’s employment, including his
retirement, the Executive agrees that he shall not, other than in
the ordinary course of performing his duties hereunder or as agreed
by the Company in writing, engage in a “Competitive
Business,” directly or indirectly, as an individual, partner,
shareholder, director, officer, principal, agent, employee,
trustee, consultant, or in any relationship or capacity, in any
geographic location in which the Company or any of its Affiliates
is engaged in business.  The Executive shall not be deemed to
be in violation of this Section 12(a) by reason of the fact that he
owns or acquires, solely as an investment, up to two percent (2%)
of the outstanding equity securities (measured by value) of any
entity.

                       
“Competitive Business” shall mean a business that
competes with a business that (i) was being conducted by the
Company or any of its Affiliates at the time of the alleged
violation, (ii) the Company or any of its Affiliates was seeking to
conduct, or seriously considering conducting, if such alleged
violation of this Section 12(a) is during the Term or (iii) the
Company or any of its Affiliates was seeking to conduct, or
seriously considering conducting, during the Term and the Company
or any of its Affiliates is actually conducting, seeking to conduct
or seriously considering conducting at the time of the alleged
violation, if such alleged violation of this Section 12(a) is after
the date of termination of the Executive’s employment,
including his retirement..  “Competitor” shall
mean any entity which is engaged in any Competitive
Business.

(b)        The
Executive agrees that for a period of three years following
termination of his employment, including  retirement, , he
will not, without the prior written consent of the Company,
directly or indirectly, hire any officer, employee or consultant of
the Company or any of its Affiliates, or knowingly solicit or
encourage any such officer, employee or consultant to leave the
employ of the Company or its Affiliates, as the case may be. 
Anything herein to the contrary notwithstanding, it shall not be a
violation of this Section 12(b) for the Executive, upon request by
an unrelated third party employer (prospective or otherwise), to
provide a personal reference for such employee setting forth his
personal views about such employee.

(c)        The
Executive agrees that for a period of three years following the
termination of his employment, including his retirement,, he will
not, without the prior written consent of the Company, knowingly
solicit or encourage any customer of the Company or any of its
Affiliates to reduce or cease its business with the Company or any
such Affiliate or otherwise knowingly interfere with the
relationship of the Company or any Affiliate with its
customers.

           
13.       Injunctive and Other
Relief. 

The Executive acknowledges
that his services are of a special, unique, unusual, extraordinary
and intellectual character giving them a peculiar value, the loss
of which cannot be reasonably or adequately compensated for in
damages.  Therefore, the Executive expressly agrees and
acknowledges any breach or threatened breach of any obligation
under Section 11 or Section 12 above will cause the Company
irreparable harm for which there is no adequate remedy at law, and
as a result of this the Company shall be entitled to the issuance
by a court of competent jurisdiction of an injunction, restraining
order or other equitable relief in favor of itself, without the
necessity of posting a bond, restraining the Executive from
committing or continuing to commit any such violation.

           
14.       Cooperation and
Consulting Period 

Following the
Executive’s termination of employment, upon reasonable
request by the Company, the Executive shall cooperate with the
Company with respect to any litigation or other dispute relating to
any matter in which he was involved or had knowledge during his
employment with the Company.  The Company shall reimburse the
Executive for all reasonable out-of-pocket costs, such as travel,
hotel and meal expenses, incurred by the Executive in providing any
cooperation pursuant to this Section 14.

The Executive further
agrees that if he receives severance pursuant to Section 9(a) or
Section 9(d) above that he will provide consulting services to the
Company, not to exceed 20 days per year, for three years following
the date of termination of his employment.

           
15.       Assignability; Binding
Nature. 

This Agreement shall be
binding upon and inure to the benefit of the Parties and their
respective successors, heirs (in the case of the Executive) and
assigns.  No rights or obligations of the Company under this
Agreement may be assigned or transferred by the Company except that
such rights or obligations may be assigned or transferred pursuant
to a merger or consolidation in which the Company is not the
continuing entity, or the sale or liquidation of all or
substantially all of the assets of the Company, provided that the
assignee or transferee is the successor to all or substantially all
of the assets of the Company and such assignee or transferee
assumes the liabilities, obligations and duties of the Company, as
contained in this Agreement, either contractually or as a matter of
law.  No rights or obligations of the Executive under this
Agreement may be assigned or transferred by the Executive other
than his rights to compensation and benefits, which may be
transferred only by will or operation of law, except as provided in
Section 18(d) below.

           
16.       Entire
Agreement.

This Agreement contains
the entire understanding and agreement between the Parties
concerning the subject matter hereof and supersedes all prior
agreements, understandings, discussions, negotiations and
undertakings, whether written or oral, between the Parties with
respect thereto.  Anything herein to the contrary
notwithstanding, this Agreement shall not supercede any outstanding
equity award agreements between the Executive and the Company, the
Change of Control Agreement, the Indemnity Agreement between the
Executive and the Company dated February 28, 2002 (the
“Indemnity Agreement”) or any outstanding loans or
promissory notes, all of which remain in full force and
effect.  In the event of any inconsistency between any
provision of this Agreement and any provision of any other
applicable Company plan, policy, program, arrangement or other
agreement, the provisions of this Agreement shall
control.

           
17.       Notices.

All notices and other
communications required or permitted hereunder shall be in writing
and shall be deemed given when (a) delivered personally, (b) three
days after mailing by certified or registered mail, postage
prepaid, return receipt requested or (c) two days after being sent
by overnight courier (provided that a written acknowledgment of
receipt is obtained by the overnight courier) to the Party
concerned at the address indicated below or to such changed address
as such Party may subsequently give such notice of in accordance
with this Section 17:

           
If to the
Company:                   
The Titan Corporation

                                                           
3033 Science Park Road

                                                           
San Diego, CA 92121

                                                           
Attention:  General Counsel

           
If to the
Executive:                   
Dr. Gene W. Ray

                                                           
c/o The Titan Corporation

                                                           
3033 Science Park Road

                                                           
San Diego, CA 92121

           
18.       Miscellaneous
Provisions.

(a)       
Amendment or Waiver.  No provision in this Agreement
may be amended unless such amendment is agreed to in writing and
signed by the Executive and an authorized officer of the
Company.  No waiver by either Party of any breach by the other
Party of any condition or provision contained in this Agreement to
be performed by such other Party shall be deemed a waiver of a
similar or dissimilar condition or provision at the same or any
prior or subsequent time.  Any waiver must be in writing and
signed by the Party against whom it is being enforced (either the
Executive or an authorized officer of the Company, as the case may
be).

(b)       
Severability.  In the event that any provision or
portion of this Agreement shall be determined to be invalid or
unenforceable for any reason, in whole or in part, the remaining
provisions of this Agreement shall be unaffected thereby and shall
remain in full force and effect to the fullest extent permitted by
law so as to achieve the purposes of this Agreement.

(c)       
Survivorship.  Except as otherwise expressly set forth
in this Agreement, upon the expiration of the Term, the respective
rights and obligations of the Parties shall survive such expiration
to the extent necessary to carry out the intentions of the Parties
as embodied in the rights (such as vested rights) and obligations
of the Parties under this Agreement, including, but not limited to,
Section 11 (confidentiality; assignment of rights), Section 13
(injunctive and other relief) and Section 14 (cooperation and
consulting period).   

(d)       
Beneficiaries; References. The Executive shall be entitled,
to the extent permitted under any applicable law, to select and
change a beneficiary or beneficiaries to receive any compensation
or benefit payable hereunder following the Executive’s death
by giving the Company written notice thereof.  In the event of
the Executive’s death or a judicial determination of his
incompetence, references in this Agreement to the Executive shall
be deemed, where appropriate, to refer to his beneficiary, estate
or other legal representative.

(e)       
Indemnification.  The Company agrees to indemnify the
Executive against any claims that arise in connection with his
service as an officer or director of the Company in accordance with
the Company’s by-laws and the Indemnity Agreement.

(f)        
Reimbursement for Legal Fees. In the event that the
Executive incurs reasonable legal fees or other expenses in an
effort to secure, preserve or obtain payments, benefits or
entitlements under this Agreement, the Company shall, regardless of
the outcome of such effort, reimburse the Executive for such fees
and expenses, after the Executive’s written submission of a
request for reimbursement together with evidence that such fees and
expenses were incurred.

(g)       
Governing Law.  This Agreement shall be governed in
accordance with the laws of Delaware without reference to
principles of conflicts of law.

(h)       
Headings.  The headings of the sections contained in
this Agreement are for convenience only and shall not be deemed to
control or affect the meaning or construction of any provision of
this Agreement.

(i)        
Withholding.  The Company shall withhold from any
amounts payable under this Agreement such United States federal,
state or local or foreign taxes as shall be required to be withheld
pursuant to any applicable law or regulation.  The Executive
acknowledges that except for such withholding, and except for such
gross-ups as are specifically provided herein, he is responsible
for paying his own taxes.

(j)        
Counterparts.  This Agreement may be executed in two or
more counterparts.

[Rest of
page left intentionally blank]

IN WITNESS WHEREOF, the
undersigned have executed this Agreement as of the date first
written above.

                                               
THE TITAN CORPORATION

                                               
By:     /s/ MARK W. SOPP 

                                               
Name:     Mark W. Sopp 

                                               
Title:  Senior Vice President, Chief Financial Office and
Treasurer

                                               
the executive

                                               
  /s/ DR. GENE W. RAY 

                                               
Dr. Gene W. Ray

Exhibit
A

Executive’s Release of
Claims

AGREEMENT AND
RELEASE

THIS AGREEMENT AND RELEASE
is executed by Gene W. Ray (the “Executive”) releasing
certain claims against The Titan Corporation, a Delaware
corporation (together with its successors and assigns, the
“Company”), and certain affiliated parties.

WHEREAS, the Executive and
the Company have entered into an employment agreement as of 
_______________ (the “Employment
Agreement”);

WHEREAS, Executive’s
employment with the Company has terminated, including by
retirement, and as such Executive is due certain payments and
entitlements pursuant to the Employment Agreement subject to the
Executive’s executing this Agreement and Release.

NOW, THEREFORE, in
consideration of the ­payments set forth in Section 9 of the
Employment Agreement and other good and valuable consideration, the
Executive agrees as follows:

1.        
The Executive, on behalf of himself and his dependents, heirs,
administrators, agents, executors, successors and assigns, hereby
releases and forever discharges the Company and all of its current
and former subsidiaries, joint venturers and affiliates, and all of
their respective directors, shareholders, officers, employees,
agents, attorneys, insurers, employees and all individuals or
entities acting by, through, under or in concert with any of them
(collectively, the “Released Parties”), from any and
all charges, controversies, claims, wages, rights, agreements,
actions, costs or expenses, causes of action, obligations, damages,
losses, promises and liabilities of whatever kind or nature, in law
or equity or otherwise, whether known or unknown, suspected or
unsuspected, from the beginning of time to the date the Executive
executes this Agreement and Release, including, but not limited to,
any claims directly or indirectly arising out of, based upon or
relating in anyway to Executive’s employment with Titan or
any affiliate, or the termination thereof, or relating to or
arising from any alleged act or omission by any of the Released
Parties. 

Without limiting the
generality of the foregoing, the Executive expressly waives and
releases all claims the Executive may have under the Age
Discrimination in Employment Act (ADEA), as amended by the Older
Workers’ Benefit Protection Act (OWPBA) or any state
counterpart, Title VII of the Civil Rights Act of 1964, the Civil
Rights Act of 1991, the Equal Pay Act, the Family and Medical Leave
Act, all claims of discrimination, retaliation or harassment under
the California Fair Employment and Housing Act, all claims under
the California Labor Code, the California Constitution, the
California Family Rights Act, the California Industrial Welfare
Commission Orders or any local, state or federal law or regulation
governing discrimination in employment; all claims under state
contract or tort law such as wrongful termination, assault,
invasion of privacy, breach of the implied covenant of good faith
and fair dealing, defamation or negligent or intentional infliction
of emotional distress and all claims for attorneys’
fees.

Anything to the contrary
notwithstanding in this Agreement and Release or the Employment
Agreement, nothing herein shall release any Released Party from any
claims or damages based on (i) any right or claim that arises after
the date of this Agreement and Release, (ii) any right the
Executive may have to enforce the Employment Agreement or this
Agreement and Release, (iii) any right the Executive may have
to vested benefits under any applicable plan, policy, program,
award or agreement of the Company; (iv) the Executive’s
eligibility for indemnification in accordance with applicable laws
or the Company’s certificate of incorporation or by-laws, or
under any applicable insurance policy with respect to any liability
the Executive incurs or has incurred as a director or officer of
the Company; (v) any rights arising out of any investor
relationship the Executive has with the Company or any affiliate,
including, but not limited to, any claim pertaining to securities
or other financial instruments, investments or partnerships; or
(vi) any claims of a personal nature unrelated to the business of
the Company or any affiliate.

2.        
The Executive expressly acknowledges and agrees that this Agreement
and Release fully and finally releases and fully resolves any and
all disputes between him and any Released Party with respect to the
claims released herein, including those that are unknown,
unanticipated or unsuspected or which may hereafter arise as a
result of the discovery of new or additional facts. 
Accordingly, the Executive expressly waives all of his rights under
California Civil Code § 1542, which provides that

           
A GENERAL RELEASE DOES NOT EXTEND TO CLAIMS WHICH THE CREDITOR DOES
NOT KNOW OR SUSPECT TO EXIST IN HIS FAVOR AT THE TIME OF EXECUTING
THE RELEASE, WHICH IF KNOWN BY HIM MUST HAVE MATERIALLY AFFECTED
HIS SETTLEMENT WITH THE DEBTOR.

The Executive also
expressly waives all rights under any other statute, legal
decisions or common law principles of similar
effect. 

3.        
The Executive acknowledges that he has been provided a period of at
least 21 calendar days in which to consider and execute this
Agreement and Release.  The Executive further acknowledges and
understands that he has seven calendar days from the date on which
he executes this Agreement and Release to revoke his acceptance of
this Agreement and Release by delivering to the Company written
notification of his intention to revoke this Agreement and Release
in accordance with the notice provision in Section 17 of the
Employment Agreement.  If the Executive so revokes his
agreement to this Agreement and Release he shall not be entitled to
the payments, benefits and other entitlements provided pursuant to
Section 9 of the Employment Agreement.  This Agreement and
Release becomes effective when signed by the Executive unless
revoked in writing in accordance with this seven-day
provision.  To the extent that the Executive has not otherwise
done so, the Executive is advised to consult with an attorney prior
to executing this Agreement and Release.

4.        
The Executive agrees never to file a claim against any Released
Party with respect to the claims released by the Executive
herein.  If the Executive files such a claim, he agrees to pay
all costs incurred by the Released Party, including
attorneys’ fees, in defending against such claim.

 

IN WITNESS WHEREOF, the
Executive has executed this Agreement and Release as of the date
written below.

                                               
                                                                       
                                                           
Gene W. Ray

                                               
Date: _______________________________

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