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                                                                Exhibit 10.9

                                 DEED OF LEASE
 
    This Deed of lease hereinafter referred to as the Lease made in 
triplicate as of the       day of October 1994 between C & T PARTNERSHIP as 
"Landlord," and DUNN COMPUTER CORPORATION, a Virginia corporation, 
hereinafter referred to as "Tenant."
 
    WITNESSETH: That Landlord hereby leases to Tenant and Tenant hereby
    leases from Landlord, the following described premises:
 
    An area of 19,230 square feet, more or less, as shown on the drawing
    attached as Exhibit "A" (the "Premises") and which is an office/warehouse
    building (the "Building") located at 1306 Squire Court, County of Loudoun,
    Sterling, Virginia the Building having approximately 35,000 gross square
    feet of space, together with the right to use in common with other tenants
    all driveways, all non-exclusive parking areas and other common facilities
    located on the property.
 
    1.  Term of Lease. The term of this Lease shall be for a period of four
    years commencing November 1, 1994 and terminating on October 31, 1999.
 
    2. Use of Premises. Tenant shall use the Premises for the following 
purposes: office and any other uses permitted by zoning. Tenant agrees that 
in its use of the Premises that it will not place a load upon any floor of 
the Premises exceeding the floor load limit of 250 pounds per square foot. 
Landlord warrants and represents that the zoning on the date of this Lease is 
PDIP.
 
    It is understood and agreed that the operation of Tenant's business in 
the Premises shall be in conformity with all applicable federal, state and 
county laws, ordinances and regulations. The obtaining of any permits or 
business licenses required in connection with the operation of Tenant's 
business in the Premises by Tenant shall be the sole responsibility and at 
the expense of Tenant. Landlord, at its own cost and expense, shall be 
responsible for all necessary building permits and certificates of occupancy 
required in connection with the Building and Premises.
 
    3. Parking. Tenant shall have the right to use, on a first come first 
served basis, all non-exclusive parking spaces located on common areas of the 
property.
 
    4. Signs. Tenant may, at its sole expense, affix to the exterior of the 
Building and/or exterior or interior of the glass located on the Premises a 
sign advertising its business, with prior written approval of design and 
placement by Landlord, which shall not be unreasonably withheld. Landlord 
hereby approves the design and placement of Tenant's existing signage.
 
    5. Rent. Tenant agrees to pay Landlord, during the term of this Lease, an 
annual fixed rent for the lease of the Premises in accordance with the 
schedule listed below. Rent shall be paid in consecutive equal monthly 
installments of 1/12 of the applicable yearly rent in advance on the first 
day of each and every month of the term. If this Lease commences or 
terminates on a day other than the first of the month, the amount of rent to 
be paid for said month shall be apportioned. The rent schedule during this 
Lease is:

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  First lease year 
month; $12,000.........................................     per year; $144,000 
  Second lease year                                                            
month; $12,000.........................................     per year; $144,000 
  Third lease year                                                             
month; $13,000.........................................     per year; $156,000 
  Balance of lease                                                             
month; $14,000.........................................     per year; $168,000 
 
    OPTION TERM.  Tenant shall have the option to extend and renew the term 
of this Lease for an additional term of one (1) five (5) year period to 
commence at the expiration of the original term of this Lease. Tenant shall 
notify Landlord in writing of its intent to exercise this option one hundred 
eighty (180) days prior to the termination date of this Lease. The rent 
schedule during the option term are market rates to be negotiated.

    A lease year shall be that twelve (12) month period commencing on the 
commencement date and ending on the twelfth month anniversary of the 
commencement date. It is agreed that if the fixed rent for any month or any 
additional rent due in any month is not paid within ten (10) days following 
its due date, Tenant shall pay to Landlord for any such month as a late 
fee/administrative charge an additional sum of three percent (3%) of such 
unpaid rent.
 
    In addition to the foregoing rent, all other payments to be made by 
Tenant pursuant to this Lease Shall be deemed to be and shall become 
additional rent hereunder, whether or not the same be designated as such, and 
shall be subject to the same terms and provisions as the rent above, and 
Landlord shall have the same remedies for failure to pay the same as for 
nonpayment of fixed rent. Landlord, at its sole election and after giving 
Tenant ten (10) days written notice and the right to cure, shall have the 
right to pay or do any act which requires the expenditure of any sums of 
money by reason of the failure of Tenant to perform any of the provisions of 
this Lease, and in such event said monies shall be due from tenant as 
additional rent and Tenant hereby agrees to pay all additional rent forthwith 
on demand from Landlord. Failure to pay fixed rent or additional rent within 
ten (10) days of receiving written notice thereof from Landlord shall 
constitute a default by the Tenant of this Lease and shall entitle the 
Landlord to avail itself of any and all of the remedies for herein.
 
    6. Utilities. Landlord agrees to pay for all utility services to the 
common areas on the property. Tenant agrees to pay directly to the company or 
utility furnishing such services all charges for electricity, gas, fuel, 
power, water, sewer use, telephone, and all other utilities serving the 
Premises as the same become due. Tenant agrees to indemnify and hold Landlord 
harmless from any claims that may be made by such companies or utilities 
which may arise from Tenant's use of utilities and/or Tenant's failure to pay 
all charges for such use.
 
    7. Insurance. Tenant agrees to pay the cost of the fire and extended 
coverage insurance, rent insurance, liability insurance and any other 
insurance as may be maintained by Landlord and required by the holders of any 
mortgages, deeds of trust or ground leases on the Building. Tenant agrees to 
do nothing and to permit nothing to be done on the Premises which 

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will violate the terms of any fire insurance policy or other insurance 
policies on the Building. Tenant covenants and agrees that Tenant will not do 
or permit anything to be done in or upon the Premises, or bring in anything 
or keep anything therein, which shall increase the rate of fire and extended 
coverage or liability insurance on the Premises or the Building above the 
standard rate applicable to Premises being occupied for the uses permitted 
herein; and Tenant further agrees that, in the event that Tenant shall do any 
of the foregoing, Tenant will promptly pay to Landlord, on demand, any such 
increase resulting therefrom, which shall be due and payable as additional 
rent hereunder. Landlord agrees that Tenant's current use of the Premises 
does not violate Landlord's insurance policies or cause an increase in the 
cost thereof. Tenant, at its sole expense, shall maintain fire and extended 
coverage insurance covering all Tenant's personal property located on the 
Premises.
 
    8. Waiver of Subrogation. For the purpose of waiver of subrogation, the 
parties mutually release and waive unto the other, all right to claim 
damages, costs or expenses for any injury to person (including death) or 
property caused by a casualty of any type whatsoever in, on or about the 
Premises, the Building or the land if the amount of such damage, cost or 
expense has been paid to such damaged party under the terms of any policy of 
insurance. All insurance policies carried with respect to this Lease, if 
permitted under applicable law and insurance policy, shall contain a 
provision whereby the insurer waives prior to loss all rights of subrogation 
against either Landlord or Tenant, as applicable. The parties agree to 
request their respective insurance carriers to issue waiver of subrogation 
endorsements to all insurance policies.
 
    9. Indemnification. Tenant agrees to save Landlord free and harmless from 
any and all losses, claims, or damages by reason of any accident, injury or 
damage to any person or property caused by Tenant's negligence, except such 
injury as may be caused by or result from the negligence of Landlord, its 
agents, or its employees.

    10. Exculpation. Tenant specifically agrees to look solely to the right 
of set-off allowed by this Lease and Landlord's equity interest in the 
Building at the time owned for recovery of any judgment from Landlord; it 
being specifically agreed that neither Landlord (original or successor), nor 
any partner, nor any beneficiary of any trust of which any person holding 
Landlord's interest is trustee, shall ever be personally liable for any 
judgment, or for the payment of any monetary obligation to Tenant. The 
provision contained in the foregoing sentence is not intended to, and shall 
not, limit any right that Tenant might otherwise have to obtain injunctive 
relief against Landlord or Landlord's successors in interest, or any action 
not involving the personal liability of Landlord (original or successor), any 
successor trustee to the persons named herein as Landlord, nor any partner, 
nor any beneficiary of any trust of which any person holding Landlord's 
interest is trustee, to respond to monetary damages from Landlord's assets 
other than Landlord's equity interest aforesaid in the Building. In no event 
shall Landlord ever be liable to Tenant for any indirect or consequential 
damages suffered by Tenant from whatever cause. The word "Landlord," as used 
herein, means only the owner for the time being of Landlord's interest in 
this Lease, that is, in the event of any transfer of Landlord's interest in 
this Lease the transferor shall cease to be liable, and shall be released 
from all liability for the performance or observance of any agreements or 
conditions on the part of Landlord to be performed or observed subsequent to 
the time of said transfer, it being understood and agreed 

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that from and after said transfer the transferee shall be liable for the 
performance and observance of said agreements and conditions.
 
    11. Public Liability Insurance. Tenant agrees to maintain and pay for, 
during the full term of this Lease, public liability insurance with 
reasonable bodily limits and property damage limits naming as insureds 
Tenant, Landlord, and holders of any mortgages or deeds of trust on the 
Premises and any other party so named by Landlord in writing to Tenant, as 
their interests appear, against Tenant's liability for any accident, injury, 
or damage on the Premises or caused by the same, and to furnish Landlord with 
a copy of such insurance policy. Such policy shall set forth an undertaking 
by the insurer to give Landlord and any other party named by Landlord thirty 
(30) days' prior written notice of any cancellation, nonrenewal, or change in 
scope or amount of coverage of such policy. Tenant agrees to increase such 
policy limits if requested by Landlord, except that such increases shall not 
be unreasonable. Tenant shall not take out any additional public liability 
insurance for the Premises without naming as insureds Tenant, Landlord, and 
any other party so designated by Landlord in writing to Tenant, as their 
interests appear.
 
    12. Alterations. Tenant agrees not to make any structural alterations or 
additions without the prior written consent of Landlord which consent may be 
granted only in the sole discretion of Landlord. Tenant shall not be 
permitted to make any change in the Building facade. Tenant agrees to pay for 
all such alterations or additions consented to by Landlord. Tenant also 
agrees not to make any non-structural alterations without the prior written 
consent of Landlord, which consent shall not be unreasonably withheld. All 
such work performed by or on behalf of Tenant shall be done in a good 
workmanlike manner, and Tenant shall ensure that all of Tenant's contractors 
engaged in such work shall at all times maintain workmen's compensation, 
adequate public liability and property damage insurance, all in amounts and 
with companies and on forms satisfactory to Landlord in Landlord's reasonable 
judgment, naming as additional insureds Landlord and any other person 
requested by Landlord in writing to Tenant, and before proceeding with such 
work Tenant shall furnish certificates of such insurance to Landlord. If 
Landlord does not advise Tenant in writing within thirty (30) days of 
Landlord's receipt of the insurance certificates that such insurance 
certificates are unacceptable for the specified reasons, the insurance 
certificates delivered by Tenant shall be deemed acceptable. Tenant shall not 
permit any mechanic's lien to be filed on the Premises for any work or 
material performed or furnished on Tenant's behalf as a result of such 
alterations and Tenant agrees to indemnify Landlord for any damages resulting 
from any such mechanic's lien being filed on the Premises.
 
    14. Tenant's Use and Occupancy Upon Subordination. Subordination of this 
Lease to any mortgage, deed of trust, ground lease or other financing 
arrangement shall not change any of Tenant's duties or obligations as 
contained herein.
 
    15. Surrender. Upon expiration or termination of this Lease, Tenant 
agrees to surrender the Premises and all equipment of Landlord in good and 
clean condition, ordinary wear and tear and damage caused by casualty 
exempted. All equipment, detachable office partitions and all personal 
property of Tenant shall be removed by Tenant upon termination of this Lease. 

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Except for Tenant's right to remove Tenant's equipment, detachable office 
partitions and all personal property, all other improvements to the Premises 
shall be the sole property of Landlord.
 
    16. Casualty Damage. Subject to the provisions of this paragraph, if the 
Premises shall be damaged by a casualty covered by an insurance policy such 
as fire, the elements, unavoidable accident or any other insured casualty but 
are not thereby rendered untenantable in whole or in part, Landlord at its 
own expense, up to the limit of the insurance proceeds received, subject to 
the rights of any mortgagee or the holders of any ground lease or the 
trustees in any deeds of trust and subject to receipt of proceeds, shall 
cause such damage to be repaired, and the rent shall not be abated. If by 
reason of such occurrence, the Premises shall be rendered untenantable only 
in part and such damage renders less than 40% of the Premises and less than 
50% of the Building untenantable, then Landlord shall, at its own expense, up 
to the limit of the insurance proceeds received and made available to 
Landlord by the holders of any mortgage, deed of trust or ground lease, cause 
the damage to be repaired, and the fixed rent meanwhile shall be abated 
proportionately as to the portion of the Premises that have been rendered 
untenantable, provided, however, that notwithstanding that less than 40% of 
the Premises and less than 50% of the Building are rendered untenantable, if 
it is determined by Landlord or Landlord's agent in his reasonable judgment 
that such damaged portion of the Premises or Building cannot be repaired 
within sixty (60) days of such casualty, then either Landlord or Tenant may 
terminate this Lease as of the date of such casualty by giving written notice 
to the other within thirty (30) days of said casualty. If more than 40% of 
the Premises or more than 50% of the Building is rendered untenantable by 
reason of such casualty, either Landlord or Tenant may terminate this Lease 
as of the date of such casualty by giving written notice to the other within 
thirty (30) days of said casualty. Notwithstanding the above, if the Premises 
are damaged in whole or in part by a casualty not covered fully by insurance 
as described above, or if the holder of any mortgage or deed of trust does 
not release the insurance proceeds to Landlord, Landlord may, at Landlord's 
sole option, either (i) repair such damage with ninety (90) days at 
Landlord's expense, in which case this Lease shall continue in full force and 
effect except that rent shall be abated as described above, or (ii) terminate 
this Lease upon written notice to Tenant within thirty (30) days of such 
occurrence of such damage of Landlord's intention to cancel and terminate 
this Lease. Notwithstanding any of the above, Landlord shall in no case be 
liable for repairs to any structures, fixtures, alterations or improvements 
to the Premises or Building added or made to the Premises by Tenant or any 
person other than Landlord or to any equipment, inventory or other personal 
property of Tenant. Landlord's obligation to repair the Premises as referred 
to above shall be strictly limited to only such repairs that can be 
accomplished and fully funded by such insurance proceeds that may be received 
by Landlord and made available to Landlord by the holders of any mortgages, 
deeds of trust, ground leases or other financing arrangements pertaining to 
the Building in which the Premises are located.
 
    17. Repairs.
 
         (a) Landlord shall keep the foundation, roof, exterior Building 
walls, interior load bearing walls of the Premises in good repair, except 
that Landlord shall not be called on to make any such repairs occasioned by 
the willful act of Tenant, its agents, invitees, customers or employees. 
Landlord, at its expense, shall also at all times manage, operate and 
maintain the 

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Premises (including all mechanical, plumbing, heating, air conditioning, 
sprinkler, electrical equipment and utility systems and service lines serving 
the Premises) and the land areas, access roads and ways, parking, loading 
docks, and loading areas around the Premises in good, clean, sanitary and 
safe condition and repair, in accordance with all directions, rules and 
regulations of the health officer, fire marshal, building inspector or other 
proper officers of the governmental agencies having jurisdiction. Tenant 
shall permit no waste, damage or injury to the Premises beyond ordinary wear 
and tear. Tenant shall at its own cost and expense replace any broken or 
cracked glass, windows, doors, locks, door jambs and partition walls in the 
Premises caused by Tenant's negligence.
 
         (b) In the event of damage to the Premises which must be repaired 
immediately in order to prevent further damage to the Premises or the 
Building, the Landlord shall have the right to proceed at once to repair such 
damage, regardless of whether Landlord or Tenant is obligated by the terms of 
this Lease to make the repairs, and the cost thereof shall be borne by the 
party who, by the terms hereof, is obligated to make said repairs. Provided 
Landlord enters the Premises with all due care, Landlord shall not be liable 
for any damage to the Premises, Tenant's property or Tenant's use of the 
Premises during such entry unless caused by Landlord's negligence.
 
         (c) Tenant shall give Landlord notice of all repairs needed to the 
Premises of which Tenant has notice. Tenant shall not make any repairs on 
behalf of Landlord until Tenant has provided written notice of the need for 
such repairs to Landlord and allowed Landlord a reasonable amount of time to 
make such repairs.
 
    18. Entry. The Landlord shall have the right to enter the Premises at all 
reasonable hours with prior notice and in the company of an employee or 
representative of Tenant to examine the same as well as for maintenance 
purposes or to make any improvements, alterations and repairs to the Premises 
or to the Building. Landlord may, during the progress of any work on the 
Premises, keep and store upon the Premises all necessary materials, tools and 
equipment without the same constituting eviction of Tenant in whole or in 
part, and the rents reserved shall in no way abate while said work is in 
progress by reason of loss of interruption of Tenant's business or otherwise. 
Landlord shall not in any event be liable for inconvenience, annoyance, 
disturbance, loss of business or other damage of Tenant by reason of the 
performance of any work on the Premises. Landlord shall, however, in 
connection with the doing of any such work use reasonable efforts to minimize 
the inconvenience, annoyance, or disturbance, caused to Tenant during such 
work. During the last nine (9) months preceding the termination of this 
Lease, Landlord shall have the right to enter the Premises at reasonable 
hours to exhibit the same for renta
 
    19. Condemnation. If the whole or part of the Premises are taken for a 
public or semi-public use, by condemnation or conveyance in lieu of 
condemnation and neither Landlord nor Tenant terminates this Lease, then the 
rents shall be decreased in proportion to the portion of the Premises so 
taken. If such taking renders the Premises unfit for Tenant's use as 
specified in Section 2, then in such event, either Landlord or Tenant shall 
have the right to terminate this 

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Lease as of the date the Landlord is divested of title to the Building in 
which the Premises are located or as of the date the condemning authority 
requires the Tenant or Landlord to quit the Building or Premises, whichever 
date occurs first, and as of such date any or all obligations hereunder shall 
be declared null and void providing Tenant has paid Landlord all rent or 
additional rent then due and payable. In the event such condemnation or 
conveyance in lieu thereof does not render the Premise unfit for Tenant's use 
but results in a taking of a portion of the Building or the lot on which the 
Building is located and Landlord determines in its reasonable judgment that 
it cannot continue to lease the Premises then the Landlord shall have the 
right to terminate the Lease after thirty (30) days written notice to Tenant. 
All proceeds paid for any such taking shall belong solely to Landlord, and 
Tenant shall have no claim for the value of any expired or unexpired term of 
this Lease. Landlord shall have and hereby reserves and excepts, and Tenant 
hereby grants and assigns to Landlord, all rights to recover for damages to 
the Building and the property on which the Building is situated and the 
leasehold interest hereby created, and to compensation accrued or hereafter 
to accrue by reason of such taking, damage or destruction, and by way of 
confirming the foregoing, Tenant hereby grants and assigns, and covenants 
with Landlord to grant and assign to Landlord, all rights to such damages or 
compensation, and covenants to deliver such further assignments and 
assurances thereof as Landlord may from time to time request, and Tenant 
hereby irrevocably appoints Landlord its attorney-in-fact to execute and 
deliver in Tenants name all such assignments and assurances. Nothing 
contained herein shall be construed to prevent Tenant from prosecuting in 
condemnation proceedings a claim for the value of any of Tenant's removable 
property installed in the Premises by Tenant at Tenant's expense and for 
relocation expenses, provided that such action shall not affect the amount of 
compensation otherwise recoverable by Landlord from the taking authority.
 
    20. Real Estate Taxes. Landlord shall pay all real property taxes 
(including extraordinary and/or special assessments) which may be levied or 
assessed by any lawful authority against the land and the Building of which 
the Premises are a part during any and each lease year. Tenant shall pay 
prior to delinquency all taxes assessed against the value of any machinery, 
equipment, fixtures, inventory or other personal property or assets of Tenant 
contained in the Premises.
 
    21. Waiver. Any waiver of a default hereunder shall not be deemed a 
waiver of any subsequent defaults. Any invalid, illegal, or unenforceable 
clause herein shall not be construed as invalidating any other clause herein 
or this agreement in its totality.
 
    22. Assignment and Subletting. Tenant covenants and agrees not to assign 
this Lease or to sublet without the written consent of Landlord, which 
consent shall not be unreasonably withheld or delayed. Any such assignment or 
subletting shall not relieve Tenant from liability for payment of rent or 
terms, conditions and covenants of this Lease. The acceptance of rent by 
Landlord from other person shall not be deemed to be a waiver of any of the 
provisions of this Lease or to be a consent to the assignment of this Lease 
or subletting of the Premises. It shall be a condition of the validity of any 
such assignment or subletting, that the assignee or subtenant agrees directly 
with Landlord, in form satisfactory to Landlord, to be bound by all the 
obligations of the Tenant hereunder, including, without limitation, the 
obligation to pay rent and other amounts provided for under this Lease and 
the covenant against further assignment and 

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subletting. No assignment, subletting or use of the Premises by any other 
party shall affect the purpose for which the Premises may be used as stated 
in Section 2 herein without Landlord's consent. Should Tenant sublease the 
Premises at a rate greater than the rental due Landlord, Tenant shall assign 
the net profit derived after payment of associated costs and commissions, to 
Landlord.
 
    23. Tenant's Default--Landlord's Remedies. 

         a. If at any time subsequent to the date of this Lease any one or 
more of the following events (herein referred to as a "Default of Tenant") 
shall happen:
 
              (i) Tenant shall fail to pay the fixed rent, additional rent or 
         other charges hereunder when due and such failure shall continue for 
         ten (10) days after receiving written notice from Landlord; or

              (ii) Tenant shall fail to perform or observe any other covenant 
         herein contained on Tenant's part to be performed or observed and 
         Tenant shall tail to remedy the same within thirty (30) days after 
         receiving written notice thereof from Landlord; or

              (iii) Tenant's leasehold interest in the Premises shall be taken
         by execution or by other process of law directed against Tenant; or

              (iv) Tenant shall make a general assignment for the benefit of 
         creditors or shall file a voluntary petition in bankruptcy or shall 
         be adjudicated bankrupt or insolvent, or shall file any petition or 
         answer seeking any reorganization, arrangement, composition, 
         readjustment, liquidation, dissolution or similar relief for itself 
         under any present or future Federal, State or other statute, law or 
         regulation for the relief of debtors, or shall seek or consent to or 
         acquiesce to the appointment of any trustee, receiver or liquidator 
         of Tenant or of all or any substantial part of its properties, or 
         shall admit in writing its inability to pay its debts generally as 
         they become due; or

              (v) A petition shall be filed against Tenant in bankruptcy or 
         under any other law seeking any reorganization, arrangement, 
         composition, readjustment, liquidation, dissolution, or similar 
         relief under any present or future Federal, State or other statute, 
         law or regulation and shall remain undismissed or unstayed for an 
         aggregate of sixty (60) days (whether or not consecutive), or if any 
         debtor in possession of all or any substantial part of its 
         properties or of the Premises shall be appointed without the consent 
         or acquiescence of Tenant and such appointment shall remain 
         unvacated or unstayed for an aggregate of sixty (60) days (whether 
         or not consecutive); or 

              (vi) If a Default of Tenant of the kind set forth in clauses 
         (i) or (ii) above shall occur and if either (x) Tenant shall cure 
         such Default within the applicable grace period or (y) Landlord 
         shall, in its sole discretion, permit Tenant to cure such Default 
         after the applicable grace period has expired, and an event 

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         which would constitute a similar Default if not cured within the 
         applicable grace period shall occur more than twice within the next 
         365 days, whether or not such event is cured within the applicable 
         grace period; 

then in such case (1) if such Default of Tenant shall occur
prior to the Commencement Date, this Lease shall ipso facto, and without
further act on the part of Landlord, terminate, and (2) if such Default of
Tenant shall occur after the Commencement Date, Landlord may terminate this
Lease by notice to Tenant, specifying a date not less than ten (10) days
after the giving of such notice on which this Lease shall terminate and this
Lease shall come to an end on the date specified therein as fully and
completely as if such date were the date herein originally fixed for the
expiration of the term of this Lease and Tenant will then quit and surrender
the Premises to Landlord, but Tenant shall remain liable as hereinafter
provided. 

         b. If this Lease shall have been terminated as provided in this 
Section, or if any execution or attachment shall be issued against Tenant or 
any of Tenant's property whereupon the Premises shall be taken or occupied by 
someone other than Tenant, then Landlord may, without notice, re-enter the 
Premises, either by force, summary proceedings, ejectment or otherwise, and 
remove and dispossess Tenant and all other persons and any and all property 
from the same, as if this Lease had not been made. 

         c. In the event of any termination, Tenant shall pay the fixed rent, 
additional rent and other sums payable hereunder up to the time of such 
termination, and thereafter Tenant, until the end of what would have been the 
term of this Lease in the absence of such termination, and whether or not the 
Premises shall have been relet, shall be liable to Landlord for, and shall 
pay to Landlord, as liquidated current damages, the fixed rent late fee/ 
administrative charges, interest and other sums which would be payable 
hereunder if such termination had not occurred, less the net proceeds, if 
any, of any reletting of the Premises, after deducting all reasonable 
expenses incurred in connection with such reletting, including, without 
limitation, all repossession costs, brokerage commissions, legal expenses, 
attorneys' fees, advertising, expenses of employees, alteration costs and 
expenses of preparation for such reletting. Tenant shall pay such current 
damages to Landlord monthly on the days which the fixed rent would have been 
payable hereunder if this Lease had not been terminated. 

         d. In case of any Default by Tenant, re-entry, expiration and 
dispossession of summary proceedings or otherwise, Landlord may (i) re-let 
the Premises or any part or parts thereof, either in the name of Landlord or 
otherwise, for a term or terms which may at Landlord's option be equal to or 
less than or exceed the period which would otherwise have constituted the 
balance of the term of this Lease and may grant concessions or free rent to 
the extent that Landlord considers reasonably necessary to re-let the same 
and (ii) may make such reasonable alterations, repairs and decorations in the 
Premises as Landlord in its sole judgment considers advisable and necessary 
for the purpose of re-letting the Premises; and the making of such 
alterations, repairs and decorations shall not operate or be construed to 
release Tenant from liability hereunder as aforesaid. Landlord shall in no 
event be liable in any way whatsoever for failure to re-let the Premises, or, 
in the event that the Premises are re-let, for failure to collect the rent 
under such re-letting. Tenant hereby expressly waives any and all rights of 
redemption

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granted by or under any present or future laws in the event of Tenant being 
evicted or dispossessed, or in the event of Landlord obtaining possession of 
the Premises, by reason of the violation by Tenant of any of the covenants of 
this Lease. 

         e. The specified remedies to which Landlord may resort hereunder are 
not intended to be exclusive of any remedies or means of redress to which 
Landlord may at any time be entitled lawfully, and Landlord may invoke any 
remedy (including the remedy of specific performance) allowed at law or in 
equity as if specific remedies were not herein provided for. All remedies 
granted in this Section or otherwise provided by law shall be cumulative and, 
unless inconsistent, may be exercised separately or concurrently or 
successively. 

         f. All costs and expenses incurred by or on behalf of Landlord 
(including, without limitation, reasonable attorneys' fees and expenses) in 
enforcing its rights hereunder or occasioned by any Default of Tenant shall 
be paid by Tenant.
 
    24. Jurisdiction. This Lease shall be governed by the laws of the 
Commonwealth of Virginia.
 
    25. Notice to Mortgagee, Trustees, or Ground Lessor. After receiving 
written notice from any person, firm or other entity that it holds a 
mortgage, deed of trust or a ground lease which includes the Premises, 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 Tenant shall have been furnished with the 
name and address of such holder, trustee or ground lessor in writing), and 
the curing of any of Landlord's defaults by such holder, trustee or ground 
lessor within thirty (30) days of the date of such notice (or such longer 
period as may be reasonably required, provided such holder, trustee or ground 
lessor is diligently pursuing such cure) shall be treated as performance by 
Landlord.
 
    26. Care of Premises. Tenant shall not perform any acts or carry on any 
practices which may damage the Premises or Building or be a nuisance or 
menace to other tenants. Tenant shall not store and'or place any material, 
crates, boxes, equipment, abandoned trailers or automobiles, in the parking 
areas, driveways, lawns, sidewalks and areas adjacent to the Premises under 
its control, including the sidewalks and areas adjacent to the Premises or 
outside the Premises in trash containers provided by Landlord. Landlord, at 
its sole expense, shall maintain the landscaped areas, remove snow and ice 
from the parking areas and roads and maintain the parking areas and roads 
adjacent to the Premises, and schedule regular trash removal. If, however, 
Tenant creates an extraordinary volume of trash or hazardous waste which 
requires special handling, Tenant agrees to reimburse Landlord for any 
additional cost occasioned thereby.
 
    27. Short Form Deed of Lease--Notice of Termination. At the option of 
either Landlord or Tenant, a short form memorandum of this Lease suitable for 
recording purposes, but in no way varying the provisions of this Lease, shall 
be entered into by Landlord and Tenant. The cost of preparing and recording 
such a memorandum shall be at the expense of the party requesting the 
recordation. In the event a short form deed of Lease is recorded, the parties 
agree 

<PAGE>

that at the expiration of this Lease that they will execute a Notice of 
Termination of this Lease and the cost of preparing and recording said Notice 
shall be at the expense of the party requesting the recording of the short 
form deed of Lease.
 
    28. Leasing Clause. Landlord warrants that it is the owner of the 
Premises and has the full right and authority to make this Lease. Landlord 
hereby releases the Premises to Tenant in accordance with the provisions of 
this Lease. Tenant hereby accepts this Lease.
 
    29. Tenant's Corporate Authority. If Tenant is a corporation, it shall, 
concurrently with the signing of this Lease, at Landlord's option, furnish to 
Landlord a certificate of good standing issued by the Commonwealth of 
Virginia. Each individual executing this Lease on behalf of Tenant hereby 
represents and warrants that he is duly authorized to execute and deliver 
this Lease and that Tenant is a duly organized corporation under the laws of 
the State of its incorporation, is qualified to do business in Virginia, is 
in good standing under the laws of the State of its incorporation and the 
laws of Virginia, and has the power and authority to enter into this Lease, 
and that all corporate action requisite to authorize Tenant to enter into 
this Lease has been duly taken.
 
    30. Notices. Any notice by either party to the other shall be in writing 
and shall be deemed to be duly given only if delivered personally or mailed 
by registered or certified mail in a post-paid envelope addressed (a) if to 
Tenant, Dunn Computer Corporation, 1306 Squire Court, Sterling, VA 20166, or 
to either at such other addresses as Tenant or Landlord, respectively, may 
designate in writing. Notice shall be deemed to have been duly given if 
facsimiled, delivered personally, on delivery thereof, and if mailed, by 
certified or registered mail, on the third day after the mailing thereof. 
Rent shall be paid to Landlord at the address as provided above.
 
    31. Heirs and Assigns. This Lease shall be binding upon and inure to the 
benefit of the parties hereto, their respective heirs, executors, 
administrators, successors and assigns, provided that nothing herein shall be 
deemed to modify the assignment and subletting provisions above.
 
    32. Covenants of Quiet Enjoyment. Landlord covenants that subject to the 
terms of this Lease, if Tenant shall pay the rent and perform all of 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.
 
    33. Paragraph Headings. The paragraph headings throughout this Lease are 
for convenience and reference only, and the words contained therein shall in 
no way be held to explain, modify or amplify or aid in the interpretation, 
construction or meaning of the provisions of this Lease.
 
    34. Complete Agreement. This Lease contains the entire agreement between 
the parties hereto and all previous negotiations leading thereto, and it may 
be modified only by an agreement in writing signed by Landlord and Tenant. 
The parties agree that the execution hereof 

<PAGE>

has not been induced by either party by any representations, promises, or 
undertakings not expressed herein.
 
    35. Costs and Expenses. All costs and expenses incurred by or on behalf 
of either party (including, without limitation, reasonable attorneys' fees 
and expenses) in enforcing its rights hereunder or occasioned by any default 
under this Lease shall be paid by the defaulting party.
 
    36. Time is of the Essence. Time is of the essence with respect to the 
performance of each of the obligations, covenants and agreements contained in 
this Lease.
 
                                          LANDLORD: C & T PARTNERSHIP
 


                                          By:_________________________________
                                          Title:______________________________
                                          By:_________________________________
                                          Title:______________________________
 

                                          TENANT: DUNN COMPUTER CORPORATION

 
                                          By:_________________________________
                                          Title:______________________________
                                          By:_________________________________
                                          Title:______________________________





                                      11
                                   EXHIBIT "A" 
                               (Legal Description)
 
<PAGE>

                                 C & T PARTNERSHIP 
                                     (Landlord) 

                                        and

                             DUNN COMPUTER CORPORATION 
                                      (Tenant)

_______________________________________________________________________________
 
                                        INDEX
 
Term of Lease.......................................................          1
Use of Premises.....................................................          1
Parking.............................................................          1
Signs...............................................................          1
Rent................................................................          1
Utilities...........................................................          2
Insurance...........................................................          3
Waiver of Subrogation...............................................          3
Indemnification.....................................................          3
Exculpation.........................................................          3
Public Liability Insurance..........................................          4
Alterations.........................................................          4
Tenant's Use and Occupancy Upon Subordination.......................          5
Surrender...........................................................          5
Casualty Damage.....................................................          5
Repairs.............................................................          6
Entry...............................................................          7
Condemnation........................................................          7
Real Estate Taxes...................................................          8
Waiver..............................................................          8
Assignment and Subletting...........................................          8
Tenant's Default Landlord's Remedies................................          8
Jurisdiction........................................................         10
Notice to Mortgagee, Trustees, or Ground Lessor.....................         10
Care of Premises....................................................         10
Short Form Deed of Lease Notice of Termination......................         11
Leasing Clause......................................................         11
Tenant's Corporate Authority........................................         11
Commission..........................................................         11
Notices.............................................................         11
Heirs and Assigns...................................................         11
Covenants of Quiet Enjoyment........................................         12
Relationship of Parties.............................................         12
Paragraph Headings..................................................         12
Complete Agreement..................................................         12
Costs and Expenses..................................................         12
Time is of the Essence..............................................         12

<PAGE>

                            FIRST ADDENDUM TO LEASE
 
    THIS FIRST ADDENDUM TO LEASE ("First Addendum"), is made as of the 1st 
day of December 1995 by and between C&T Partnership, a Virginia General 
Partnership ("Landlord"), and Dunn Computer Corporation ("Tenant") a Virginia 
corporation ("Tenant"):
 
RECITALS
 
    Pursuant to the Deed of Lease dated October 31, 1994, by and between C&T 
Partnership ("Landlord"), and Dunn Computer Corporation ("Tenant"), Landlord 
leased to Tenant an area of 14,230 square feet, more or less (the 
"Premises"), in a 35,100 square foot building (the "Building"), located at 
1306 Squire Court, Sterling, Loudoun County, Virginia 20166. Tenant desires 
to expand into the two adjacent room as indicated on attached floor plan 
increasing the square footage of the Premises from 14,230 square feet to 
19,230 square feet, more or less. The Lease is hereby amended in accordance 
with the following terms and conditions.
 
AGREEMENT
 
    For and in consideration of the rent and the mutual benefits flowing to 
the parties from the Lease as amended hereby, and for other good and valuable 
consideration, the receipt and sufficiency of which are acknowledged, 
Landlord and Tenant agree as follows:
 
1.  TERM
 
    The term of this First Addendum shall commence December 1, 1995 and 
    terminate October 31, 1999.
 
2.  PREMISES
 
    Landlord and Tenant hereby agree that Tenant shall expand its premises by 
    5,000 square feet, more or less, into space shown on attached floor plan. 
    The total area of the Premises for all purposes shall hereafter be 19,230 
    square feet.
 
3.  UTILITIES
 
    Tenant agrees to pay all utilities within the Premises as expanded.
 
4.  IMPROVEMENTS
 
    Tenant agrees to accept the expansion space in "as is" condition. 
    Landlord will promptly and reasonably approve Tenant's plans for said 
    improvements. Tenant

<PAGE>
 
                                               Landlord:
 
                                               C&T Partnership 
                                               A Virginia General Partnership
 
WITNESS AND ATTEST




_________________________________              By:___________________________
                                                  Thomas Dunn



WITNESS AND ATTEST




_________________________________              By:___________________________
                                                  Claudia Dunn
 

                                                  _____________________


                                               Tenant:


WITNESS & ATTEST                               Dunn Computer Corporation




_________________________________              By:___________________________

                                               Name:_________________________
 
                                               Title:________________________

<PAGE>
 
                            SECOND ADDENDUM TO LEASE
 
    THIS SECOND ADDENDUM TO LEASE ("Second Addendum") is made as of the 31st 
day of October 1996 by and between C&T Partnership, a Virginia General 
Partnership ("Landlord") and Dunn Computer Corporation, a Virginia 
corporation ('Tenant").

RECITALS
 
    Pursuant to the Deed of Lease dated October 31, 1994, by and between C&T 
Partnership ("Landlord"), and Dunn Computer Corporation ('Tenant"), a 
Landlord leased to Tenant an area of 19,230 square feet, more or less (the 
"Premises"), in a 35,100 square foot building (the "Building"), located at 
1306 Squire Court, Sterling, Loudoun County, VA 20166. Tenant desires to have 
a fixed price lease and Landlord hereby agrees to amend lease in accordance 
with the following terms and conditions.

AGREEMENT
 
1.  TERM
 
    The term of this Second Addendum shall commence October 31, 1996 and 
    terminate October 31, 1999.
 
2.  PREMISES
 
    Landlord and Tenant hereby agree that this Second Addendum covers 
    specifically the 19,230 square feet, more or less, currently being leased 
    by Tenant.
 
3.  RENT
 
    Rent is currently $168,000 annually. This rent shall be fixed through the 
    term of the Lease. The rent schedule in paragraph 5 of the lease is now 
    modified and reads as follows:
 
    Third year of lease $168,000; $14,000 per month 
    Fourth year of lease $168,000; $14,000 per month 
    Fifth year of lease $168,000; $14,000 per month.
 
4.  FULL FORCE AND EFFECT
 
    Except as modified hereby, all other terms, convenience and conditions of 
    the Lease are hereby acknowledged to be in full force and effect, and the 
    parties ratify and confirm same. To the extent that the terms of this 
    Second Addendum conflict with or contradict the terms of the Lease it is 
    the intent of the parties hereto that the terms of this Second Addendum 
    shall control.
 
<PAGE>

Page 2

                                               Landlord: 
                                               C&T Partnership 
                                               A Virginia General Partnership

WITNESS AND ATTEST




_________________________________              By:___________________________
                                                     Thomas Dunn, Partner




WITNESS AND ATTEST




_________________________________              By:___________________________
                                                     Claudia Dunn, Partner


                                               ______________________________
                                               Tenant:
WITNESS AND ATTEST                             Dunn Computer Corporation



_________________________________              By:___________________________
                                               Name:  John D. Vazzana
                                               Title: Exec. Vice Pres.