Document:

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                          CORPORATE SERVICES AGREEMENT

                           DATED AS OF AUGUST 4, 2000

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                          CORPORATE SERVICES AGREEMENT

         THIS CORPORATE SERVICES AGREEMENT (the "AGREEMENT"), is effective as of
August 4, 2000 (the "EFFECTIVE DATE"), by and between THE TITAN CORPORATION, a
Delaware corporation ("TITAN") and SUREBEAM CORPORATION, a Delaware corporation
(the "COMPANY").

                                    RECITALS

         WHEREAS, Titan is the common parent of an affiliated group of
corporations which includes the Company (the "TITAN GROUP");

         WHEREAS, Titan is the principal stockholder of the Company and the
Company has become a member of the Titan Group;

         WHEREAS, the Company and its majority-owned subsidiaries require
certain administrative support in the conduct of its business; and

         WHEREAS, Titan wishes to offer and provide such support to the Company,
and the Company wishes to accept such support, upon the terms and conditions set
forth herein.

                                    AGREEMENT

         NOW, THEREFORE, in consideration of the foregoing premises and the
mutual covenants and obligations contained herein, the parties agree as follows:

1.       SCOPE OF AGREEMENT.

         Titan hereby agrees to provide or make available certain occupancy,
administrative support and related services to the Company and/or its
majority-owned subsidiaries (the "SERVICES") in accordance with the terms and
conditions of this Agreement. Titan shall also provide such additional support
or services to the Company and/or its majority-owned subsidiaries pursuant to
this Agreement as Titan and the Company may mutually agree. The Services shall
be performed in the manner, to the extent and at a time substantially consistent
with the manner in which Titan performs administrative or other services for its
own benefit.

2.       SERVICES.

         2.1 TYPES OF OCCUPANCY AND SUPPORT SERVICES. Services under this
Agreement shall be for support of the type described below:

                  (a) ACCOUNTING SERVICES. Titan shall provide bookkeeping and
accounting services, including the maintenance of books and records of the
Company's financial operations, stock option accounting services, internal audit
support services, and review of compliance with financial and accounting
procedures. Titan shall assist the Company in the preparation of Securities and
Exchange Commission and NASDAQ Stock Market filings, including without

                                       1.

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limitation, Forms 8-K, 10-Q and 10-K, annual and quarterly reports to
stockholders and proxy statements and proxies and assist in the solicitation of
proxies.

                  (b) PAYROLL AND PERSONNEL SERVICES. Titan shall provide the
following payroll and personnel services to the Company: administration of
reasonable employee payroll matters and maintenance of general employee
insurance obligations; establishment and management of an employee benefits
program; management of a corporate human resources program relating to executive
and employee recruiting, hiring and training of employees and their
administration; and advice on employee relations and related issues, management
of the Company's employee equity incentive plans and programs and establishment
and management of retirement plans (including the establishment of a 401(k)
Retirement Plan).

                  (c) MIS SERVICES. Titan shall provide reasonable management
information services to the Company, including but not limited to: coordination
of intercompany network services and database management services between Titan
and the Company; information technology planning services and centralized
procurement of hardware and software. Titan may provide additional management
information services as are mutually agreed between Titan and the Company. In
addition, Titan shall allow the Company and its wholly owned subsidiaries to
access, display and use software systems and programs owned by or licensed to
Titan, except to the extent that Titan is precluded by its licenses from
providing such access, display or use.

                  (d) LEGAL SERVICES. Titan shall consult with and advise the
Company in determining the Company's need for legal services, including legal
services from the Company's General Counsel and other legal counsel with respect
to: labor and personnel matters; compliance with applicable securities laws and
regulations; government contracting laws and other applicable laws and
regulations; litigation management, contract negotiation and preparation;
mergers and acquisitions; intellectual property protections; tax issues;
preventive counseling; and all matters relating to corporate governance of the
Company. The Company shall be responsible for paying and shall bear the cost of
all legal services provided to the Company.

                  (e) CONTRACTING SERVICES. Titan shall provide the Company
reasonable contracting services as requested by the Company, including
assistance with contract negotiations and administration of contracts.

                  (f) RISK MANAGEMENT. Titan shall provide the Company
centralized insurance purchasing for liability, property, casualty and other
normal business insurance and the handling of claims. Titan also shall provide
the Company support for product, worker safety and environmental programs of the
Company. Company acknowledges its primary responsibility for compliance with
applicable laws and the establishment and implementation of such programs.

                  (g) TAX RELATED SERVICES. Titan shall assist the Company in
the preparation of federal, state and local income tax returns, tax research and
planning and assistance on tax audits or other tax-related controversies.

                  (h) CORPORATE RECORD KEEPING SERVICES. Titan shall maintain,
on behalf of the Company, corporate records, including minutes of meetings of
the board of directors and

                                       2.

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stockholders of Company, supervision of transfer agent and registration
functions, maintenance of stock records, including the tracking of stock
issuances and stock reservations, and maintenance of records relating to Section
16 of the Securities and Exchange Act of 1934, as amended, and insider trading
compliance.

                  (i) FINANCIAL SERVICES. Titan shall provide to the Company the
following financial services: (i) banking services administration, including
bank account administration, loan administration, covenant compliance
administration, maintenance of cash collection and disbursement systems and
arrangement of letters of credit, foreign currency exchanges or conversion
calculations and cash transfers; (ii) financial management and information
services, including centralized cash management, pension fund management,
leasing, customer financing, financial analysis and providing information on
foreign currency issues, risk assessment and hedging strategies; and (iii)
investment banking services, including advice and support for equity and debt
financings, managing Titan and the Company's relationships with debt rating
agencies, analysis, advice, negotiation and other support for mergers and
acquisitions, investor relations services and management of relationships with
equity financial analysts. In connection with such services, Titan is authorized
to (y) invest the funds deposited by the Company with Titan in taxable,
tax-exempt or tax-preferred instruments of short or longer term duration based
upon Titan's assessment of the Company's tax considerations and the Company's
cash needs or (z) loan all or any portion of funds to Titan or any other
subsidiary or affiliate of Titan at interest rates not less than would be
received from comparable term taxable interest-bearing securities and on payment
terms consistent with the Company's cash needs. Titan will advise the Company on
a quarterly basis as to the earnings that the Company may expect on its cash
deposits during the following quarter.

                  (j) CREDIT SERVICES. Titan shall assist the Company in
identifying and obtaining cost-effective sources of financing consistent with
the needs of Titan and its affiliated companies. Subject to entering into a
reimbursement agreement, Titan may provide the Company with corporate guaranties
or other credit support in connection with the Company's direct external
financing transactions.

                  (k) OCCUPANCY SERVICES. Titan shall provide the office space
described on EXHIBIT A attached hereto, maintenance, property taxes, utilities,
landlord pass-through expenses, property insurance, reception desk services,
telephone services (including use of the telephone system) and centralized mail
and postage and other services and operating expenses currently provided as part
of Titan's occupancy services allocated to its subsidiaries ("OCCUPANCY
SERVICES"). Titan will allow the Company to continue to use furniture and
equipment owned by Titan but used by the Company in its business as of the date
of this Agreement, subject to the parties' agreement to eliminate or add
furniture and equipment.

         2.2      PERFORMANCE OF SERVICES.

                  (a) PERFORMANCE. The Services shall be performed by Titan on
an ongoing basis during the Term (as defined in Section 5.1 below), as
reasonably required or requested by the Company.

                                       3.

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                  (b) THIRD PARTY PROVISION OF SERVICES. At its option, Titan
may provide any of the Services by contracting with a third party to provide
such services. In such event, the Company shall continue to pay Titan directly
for the services in accordance with Section 2.3 of this Agreement.

         2.3      CHARGE FOR SERVICES.

                  (a) DIRECT SERVICES. The Company shall reimburse Titan monthly
for all Services directly attributable to the Company and/or its majority-owned
subsidiaries at Titan's fully allocated cost, or in the case of Services
provided by a third party at the invoiced amount to Titan.

                  (b) HUMAN RESOURCES FEE. For human resources related Services,
the Company shall pay Titan an annual fee equal to the Company's percentage of
Titan's annual cost of its human resource function, with the percentage being
the percentage of the Company's average headcount to the total Titan Group
average headcount as of the last day of the last fiscal year and as of the end
date of each of the four quarters of the current fiscal year ("HUMAN RESOURCES
FEE"). Prior to the beginning of each fiscal year, Titan will estimate the Human
Resources Fee for such fiscal year and Company shall pay Titan the estimated
annual Human Resources Fee in twelve equal monthly installments. At the end of
each fiscal year, Titan will calculate the actual Human Resources Fee and shall
credit the Company for any overpayments against the first payments due on the
Human Resources Fee for the new fiscal year and invoice the Company for any
underpayments of the Human Resources Fee.

                  (c) OCCUPANCY SERVICES. For Occupancy Services, the Company
shall pay Titan an annual fee equal to the Company's percentage of Titan's
annual costs of its Occupancy Services ("OCCUPANCY FEE"). The Company's
percentage shall be the percentage of the Company's square footage occupied to
the total square footage occupied by Titan and its subsidiaries. Titan will
estimate the Occupancy Fee for each fiscal year and the Company shall pay Titan
the estimated annual Occupancy Fee in twelve equal monthly installments, subject
to adjustment quarterly for any material changes (as determined by Titan) in the
amount of square feet subleased or the amount of other Occupancy Services used.
At the end of each fiscal year, Titan will calculate the actual Occupancy Fee
and shall credit the Company for any overpayments against the first payments due
on the Occupancy Fee for the new fiscal year and invoice the Company for any
underpayments of the Occupancy Fee. In those facilities wholly occupied by the
Company, the full expense of those facilities will be charged (See EXHIBIT A
attached hereto).

                  (d) MIS SERVICES.

                           (i)  DESKTOP SUPPORT. For desktop support related
Services, the Company shall pay Titan an annual fee equal to the Company's
percentage of Titan's annual cost of its desktop support function, with the
percentage being the percentage of the Company's average headcount to the total
Titan Group average headcount as of the last day of the last fiscal year and as
of the end date of each of the four quarters of the current fiscal year
("DESKTOP SUPPORT FEE"). Prior to the beginning of each fiscal year, Titan will
estimate the Desktop

                                       4.

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Support Fee for such fiscal year and the Company shall pay Titan the estimated
annual Desktop Support Fee in twelve equal monthly installments. At the end of
each fiscal year, Titan will calculate the actual Desktop Support Fee and shall
credit the Company for any overpayments against the first payments due on the
Desktop Support Fee for the new fiscal year and invoice the Company for any
underpayments of the Desktop Support Fee.

                           (ii) WAN SUPPORT. The Company shall pay Titan an
annual fee determined by the Company's percentage of Titan's annual cost of its
central WAN support services (the "WAN SUPPORT SERVICES FEE"). The Company's
percentage shall be determined in the same manner as the Corporate Services Fee
in Section 2.3(e). Prior to the beginning of each fiscal year, Titan will
estimate the WAN Support Services Fee for such fiscal year and Company shall pay
Titan the estimated annual WAN Support Services Fee in twelve equal monthly
installments. At the end of each fiscal year, Titan will calculate the actual
WAN Support Services Fee and shall credit the Company for any overpayments
against the first payments due on the WAN Support Services Fee for the new
fiscal year and invoice the Company for any underpayments of the WAN Support
Services Fee of the Titan Group.

                           (iii) DELTEK  SUPPORT. The Company shall pay Titan an
annual fee determined by the Company's percentage of the annual cost of Titan's
Deltek Division's central Deltek support services (the "DELTEK SUPPORT SERVICES
FEE"). The Company's percentage shall be the average of the following three
percentages as of the final day of the last fiscal year and as of the end date
of each of the four quarters of the current fiscal year: (i) the percentage of
the Company's total payroll dollars of the total payroll of the Deltek Division
of the Titan Group as of the final day of the last fiscal year, (ii) the
percentage of the Company's operating revenue to the total operating revenue of
the Deltek Division of the Titan Group as of the final day of the last fiscal
year and (iii) the percentage of the average net book value of the sum of the
Company's tangible capital assets plus inventories to the total average net book
value of the Titan Group's Deltek Division's tangible capital assets plus
inventories determined as of the end date of each of the four quarters of the
current fiscal year; provided that Titan reserves the right to adjust the
allocations for such Deltek Support Services based upon its assessment of the
actual relative use of the Deltek support services by the members of the Deltek
Division of the Titan Group. Prior to the beginning of each fiscal year, Titan
will estimate the Deltek Support Services Fee for such fiscal year and Company
shall pay Titan the estimated annual Deltek Support Services Fee in twelve equal
monthly installments. At the end of each fiscal year, Titan will calculate the
actual Deltek Support Services Fee and shall credit the Company for any
overpayments against the first payments due on the Deltek Support Services Fee
for the new fiscal year and invoice the Company for any underpayments of the
Deltek Support Services Fee of the Titan Group.

                  (e) CORPORATE SERVICES. For all other Services, the Company
shall pay Titan an annual fee determined by the Company's percentage of Titan's
annual cost of its central corporate services ("CORPORATE SERVICES FEE"). The
Company's percentage shall be the average of the following three percentages as
of the final day of the last fiscal year and as of the end date of each of the
four quarters of the current fiscal year: (i) the percentage of the Company's
total payroll dollars of the total payroll of the Titan Group as of the final
day of the last fiscal year, (ii)

                                       5.

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the percentage of the Company's operating revenue to the total operating revenue
of the Titan Group as of the final day of the last fiscal year and (iii) the
percentage of the average net book value of the sum of the Company's tangible
capital assets plus inventories to the total average net book value of the Titan
Group's tangible capital assets plus inventories determined as of the end date
of each of the four quarters of the current fiscal year; provided that Titan
reserves the right to adjust the allocations for such Services based upon its
assessment of the actual relative use of the central corporate services by the
members of the Titan Group. Prior to the beginning of each fiscal year, Titan
will estimate the Corporate Services Fee for such fiscal year and Company shall
pay Titan the estimated annual Corporate Services Fee in twelve equal monthly
installments. At the end of each fiscal year, Titan will calculate the actual
Corporate Services Fee and shall credit the Company for any overpayments against
the first payments due on the Corporate Services Fee for the new fiscal year and
invoice the Company for any underpayments of the Corporate Services Fee of the
Titan Group.

                  (f) INVOICES. The Company shall pay to Titan the aggregate
amount specified in any invoice for services within ten (10) days of receipt by
the Company.

3.       DUTIES OF THE COMPANY.

         3.1 COOPERATION. The Company shall fully cooperate with Titan to permit
Titan to perform its duties and obligations under this Agreement in a timely
manner. The Company shall direct its officers, directors, employees, and agents
("REPRESENTATIVES") to (i) properly respond to requests by Titan for
information, and (ii) if requested by Titan, meet with or consult with Titan
regarding any manner related to the Services. The Company shall also promptly
provide Titan with copies of any agreements, instruments or documents in
possession of the Company as are reasonably requested by Titan, and promptly
provide Titan with any notices or other communications that the Company may
receive that may have any affect on Titan performance of the Services.

         3.2 ACCURACY OF INFORMATION. The Company shall be responsible for the
completeness and accuracy of all information furnished to Titan by the Company
and Representatives of the Company in connection with Titan's performance of the
Services.

4.       LIMITATION OF LIABILITY.

         The Company acknowledges that Titan is not in the business of providing
Services and that Services are being provided pursuant to this Agreement as an
accommodation to the Company. The Company's sole and exclusive remedy and
Titan's sole and exclusive liability for any breach of by Titan of Section 2,
and for any damages of the Company suffered or incurred directly or indirectly
in connection with the provision of Services by Titan (whether any claim related
to such damages arises in contract, in tort, by statute or otherwise), shall be
the performance by Titan of Services at Titan's expense. Titan makes no
warranty, express or implied, including any implied warranty of merchantability
for a particular purpose or as to the performance of the Services furnished
thereunder, nor any implied warranty arising from course of performance, course
of dealing or usage of trade, all of which are hereby expressly disclaimed.
Under no circumstances, including the failure of the essential purpose of any
remedy, shall Titan

                                       6.

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be liable for any consequential, exemplary, punitive or incidental damages,
including lost profits, regardless of whether Titan has been advised of the
possibility of such damages.

5.       TERM AND TERMINATION.

         5.1 TERM. This Agreement shall begin as of the Effective Date and shall
continue through December 31, 2001 ("TERM"). This Agreement shall automatically
renew at the end of the initial Term and each subsequent Term for successive
one-year terms unless the Company notifies Titan at least 45 days prior to the
end of the current fiscal year that it intends to terminate this Agreement or
the Agreement otherwise terminates in accordance with Section 5.2.

         5.2 TERMINATION. This Agreement shall automatically terminate without
any further action by either party on the date that the Company ceases to be a
member of the Titan Group.

         5.3 EFFECT OF TERMINATION. If this Agreement is terminated pursuant to
this Section 5, all further obligation of the parties under this Agreement shall
terminate; provided, however, that: (a) no party shall be relieved of any
obligation or liability arising from any prior breach by such party of the
provisions of this Agreement; (b) the parties shall, in all events, remain bound
by and continue to be subject to the terms set forth in Sections 4, 5 and 6; and
(c) the Company shall remain liable for payment under Section 2.3 for any
Services performed on or prior to the date of termination. Following
termination, if Titan performs any Services for the Company on an as-requested
basis or as required in the event that the Company is unable to arrange for
another source for such services or as otherwise required by Titan in acting in
its capacity as the majority stockholder of the Company, then Titan shall charge
the Company, and the Company shall pay Titan, on a monthly basis, a fee equal to
the market rate for comparable services. The obligations in this Section 5.3
shall survive termination of this Agreement.

         5.4 TERMINATION FEE. If the Agreement terminates pursuant to Section
5.2, then the Company shall pay Titan a termination fee equal to the estimated
Corporate Services Fee and Human Resources Fees for the remaining months in the
current fiscal year following the date of termination of this Agreement.

6.       CONFIDENTIALITY, RECORDS.

         6.1 PROPRIETARY INFORMATION. All information furnished or disclosed by
one party (a "DISCLOSING PARTY") to the other party (a "RECEIVING PARTY") in
connection with the negotiation or performance of this Agreement, including but
not limited to trade secrets, cost and pricing information, proprietary computer
programs and algorithms, techniques, designs, drawings, prototypes, formulae or
test data, relating to any research project, work in process, future
development, engineering, manufacturing, marketing, servicing, financing or
personnel matter shall be deemed "PROPRIETARY INFORMATION." of the Disclosing
Party. Provided, however, that the term "Proprietary Information" shall not be
deemed to include information which the Receiving Party can demonstrate by
competent written proof: (a) is now, or hereafter becomes, through no act or
failure to act on the part of the Receiving Party, available in the public
domain; (b) is known by the Receiving Party at the time of receiving such
information; (c) is hereafter furnished to the Receiving Party by a third party
without such third party violating an agreement

                                       7.

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with the Disclosing Party; (d) is independently developed by the Receiving Party
without reference to the Proprietary Information or (e) is the subject of a
written consent to disclose by the Disclosing Party.

         6.2 USE AND HANDLING OF PROPRIETARY INFORMATION. The Receiving Party
shall maintain all Proprietary Information in trust and confidence and shall use
at least the same degree of care regarding this information as it uses with
respect to its own Proprietary Information to prevent it's unauthorized
disclosure, use or publication. The Receiving Party may use such Proprietary
Information only to the extent required to accomplish the intent of this
Agreement. The Receiving Party shall not use the Proprietary Information for any
purpose or in any manner that would constitute a violation of any laws or
regulations, including, without limitation, the export control laws of the
United States.

         6.3 OWNERSHIP OF PROPRIETARY INFORMATION. All Proprietary Information
(including all copies thereof) of a party hereto shall at all times remain the
property of such Disclosing Party. No rights or licenses to trademarks,
inventions, copyrights or patents are implied or granted under this Agreement.

         6.4 PERMITTED DISCLOSURE. A party may disclose Proprietary Information
to its professional advisors, and may disclose such information if such
disclosure is in response to a valid order of a court or other governmental body
of the United States or any political subdivision thereof or is mandated by
applicable law, provided, however, that the Receiving Party shall first have
given notice to the Disclosing Party and shall provide reasonable assistance to
the Disclosing Party to a protective order, confidentiality order or other
appropriate relief. Any compelled disclosure shall be limited to the maximum
disclosure required by such order or applicable law.

         6.5 INJUNCTIVE RELIEF. Each party hereby acknowledges and agrees that
in the event of any breach of this Agreement by a Receiving Party, including,
without limitation, the actual or threatened disclosure of Proprietary
Information without the prior express written consent of the Disclosing Party,
the Disclosing Party will suffer an irreparable injury, such that no remedy at
law will afford it adequate protection against, or appropriate compensation for,
such injury. Accordingly, in the event of any breach or threatened breach by a
Receiving Party of any provisions of this Section 6, the Disclosing Party shall,
in addition to all other remedies available to it, be entitled to specific
performance of the Receiving Party's obligations under this Agreement.

7.       MISCELLANEOUS.

         7.1 TAXES. The Company shall pay any and all direct or indirect taxes
arising out of payments made or due pursuant to this Agreement other than any
income taxes payable by Titan.

         7.2 GOVERNING LAW. This Agreement shall be governed by and construed
under the internal laws of the State of California as such laws are applied to
agreements between California residents entered into and performed entirely in
California.

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         7.3 ENTIRE AGREEMENT; AMENDMENT. This Agreement, including any and all
attachments or exhibits hereto, constitutes the entire, final and exclusive
understanding and agreement between the parties with respect to the subject
matter hereof. This Agreement may be amended, waived, discharged or terminated
only by written agreement of the parties.

         7.4 SEVERABILITY. In case any provision of this Agreement shall be
invalid, illegal or unenforceable, the parties intend that (a) in lieu of such
provision there be added as part of this Agreement a provision as similar in
terms to such invalid, illegal or unenforceable provision as may be possible and
be valid, legal and enforceable and (b) the validity, legality and
enforceability of the remaining provisions, or any subsequent applications
thereof, shall not in any way be affected or impaired thereby.

         7.5 PARTIES IN INTEREST. This Agreement shall inure to the benefit of
and be binding upon Titan, the Company and their successors and assigns. The
provisions of this Agreement are for the sole benefit of Titan and the Company
and the creditors and stockholders of Titan and the Company are not intended
beneficiaries of this Agreement.

         7.6 DELAYS OR OMISSIONS. It is agreed that no delay or omission to
exercise any right, power or remedy accruing to any party, upon any breach,
default or noncompliance by another party under this Agreement shall impair any
such right, power or remedy, nor shall it be construed to be a waiver of any
breach, default or noncompliance, or any acquiescence therein, or of or in any
similar breach, default or noncompliance thereafter occurring. All remedies,
either under this Agreement, by law, or otherwise afforded to any party, shall
be cumulative and not alternative.

         7.7 FORCE MAJEURE. In the event that a party's performance under this
Agreement, other than the Company's obligation to make payments, shall be
interrupted or delayed by the occurrence of any event beyond the reasonable
control of such party, then such party shall be excused from performance during
the period of time when the interruption occurred.

         7.8 CAPTIONS. Titles or captions of Sections and paragraphs contained
in this Agreement are inserted only as a matter of convenience and for
reference, and in no way define, limit, extend, or describe the scope of this
Agreement or the intent of any provision hereto.

         7.9 NUMBER AND GENDER. Whenever required by the context, the singular
number shall include the plural, the plural number shall include the singular,
and the gender of any pronoun shall include all genders.

         7.10 NOTICES. Unless otherwise provided, any notice required or
permitted under this Agreement shall be given in writing and shall be deemed
effectively given: (a) upon personal delivery to the party to be notified; (b)
when sent by confirmed telex or facsimile if sent during normal business hours
of the recipient, if not, then on the next business day; (c) upon deposit with
the United States Post Office, by registered or certified mail, postage prepaid
and addressed to the party to be notified parties; or (d) one (1) day after
deposit with a nationally recognized overnight courier, specifying next day
delivery, with written verification of receipt at the address

                                       9.

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indicated for such party on the signature page hereof, or at such other address
as such party may designate by ten (10) days' advance written notice to the
other.

         7.11 COMPUTATION OF TIME. Whenever the last day for the exercise of any
privilege or the discharge of any duty hereunder shall fall on a Saturday,
Sunday or any public or legal holiday, whether local or national, the person
having such privilege or duty shall have until 5:00 p.m. Pacific Standard Time
on the next business day to exercise such privilege, or to discharge such duty.

         7.12 COSTS AND EXPENSES. Unless otherwise provided in this Agreement,
each party shall bear all fees and expenses incurred in performing its
obligations under this Agreement.

         7.13 COUNTERPARTS. This Agreement may be executed in any number of
counterparts, each of which shall be an original, but all of which together
shall constitute one instrument.

         7.14 STATUS. Titan shall be deemed to be an independent contractor and,
except as expressly provided or authorized in this Agreement, shall have no
authority to act for or represent the Company or bind or commit the Company to
any agreement or obligation.

         7.15 OTHER ACTIVITIES OF TITAN. The Company recognizes that Titan now
renders and may continue to render administrative, management and other services
to other companies in the Titan Group and other companies that may or may not
have policies and conduct activities similar to those of the Company. Titan
shall be free to render such services and the Company hereby consents thereto.
Titan shall only devote so much of its time and attention to the performance of
its duties under this Agreement as Titan deems reasonable or necessary to
perform the Services required thereunder.

                      [THIS SPACE INTENTIONALLY LEFT BLANK]

                                      10.
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         IN WITNESS WHEREOF, this Agreement has been duly executed and delivered
by the respective parties as of the respective dates set forth above.

                                        THE TITAN CORPORATION
                                        a Delaware corporation

                                        By: /s/ Cheryl L. Barr
                                           ------------------------------------

                                        Print Name: Cheryl L. Barr
                                                   ----------------------------

                                        Title: Assistant Secretary
                                              ---------------------------------

                                        ADDRESS:  3033 Science Park Road
                                        San Diego, CA  92121-1199
                                        Attn:  President
                                        Fax:  (858) 552-9651

                                        SUREBEAM CORPORATION,
                                        a Delaware corporation

                                        By: /s/ Larry Oberkfell
                                           ------------------------------------

                                        Print Name: Larry Oberkfell
                                                   ----------------------------

                                        Title: President and CEO
                                              ---------------------------------

                                        ADDRESS:  3033 Science Park Road
                                        San Diego, CA  92121-1199
                                        Attn:  President
                                        Fax:  (858) 552-9973

                [SIGNATURE PAGE TO CORPORATE SERVICES AGREEMENT]

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                               TABLE OF CONTENTS
                                   (CONTINUED)

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                                                                                                               PAGE
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1.       SCOPE OF AGREEMENT.......................................................................................1

2.       SERVICES.................................................................................................1

         2.1      Types of Occupancy and Support Services.........................................................1

                  (a)      Accounting Services....................................................................1

                  (b)      Payroll and Personnel Services.........................................................2

                  (c)      MIS Services...........................................................................2

                  (d)      Legal Services.........................................................................2

                  (e)      Contracting Services...................................................................2

                  (f)      Risk Management........................................................................2

                  (g)      Tax Related Services...................................................................2

                  (h)      Corporate Record Keeping Services......................................................3

                  (i)      Financial Services.....................................................................3

                  (j)      Credit Services........................................................................3

                  (k)      Occupancy Services.....................................................................3

         2.2      Performance of Services.........................................................................3

                  (a)      Performance............................................................................4

                  (b)      Third Party Provision of Services......................................................4

         2.3      Charge for Services.............................................................................4

                  (a)      Direct Services........................................................................4

                  (b)      Human Resources Fee....................................................................4

                  (c)      Occupancy Services.....................................................................4

                  (d)      MIS Services...........................................................................4

                  (e)      Corporate Services.....................................................................6

                  (f)      Invoices...............................................................................6

3.       DUTIES OF THE COMPANY....................................................................................6

         3.1      Cooperation.....................................................................................6

         3.2      Accuracy of Information.........................................................................6

4.       LIMITATION OF LIABILITY..................................................................................6

5.       TERM AND TERMINATION.....................................................................................7

                                       i.

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                               TABLE OF CONTENTS
                                   (CONTINUED)

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<S>                                                                                                            <C>

         5.1      Term............................................................................................7

         5.2      Termination.....................................................................................7

         5.3      Effect of Termination...........................................................................7

         5.4      Termination Fee.................................................................................7

6.       CONFIDENTIALITY, RECORDS.................................................................................7

         6.1      Proprietary Information.........................................................................7

         6.2      Use and Handling of Proprietary Information.....................................................8

         6.3      Ownership of Proprietary Information............................................................8

         6.4      Permitted Disclosure............................................................................8

         6.5      Injunctive Relief...............................................................................8

7.       MISCELLANEOUS............................................................................................9

         7.1      Taxes...........................................................................................9

         7.2      Governing Law...................................................................................9

         7.3      Entire Agreement; Amendment.....................................................................9

         7.4      Severability....................................................................................9

         7.5      Parties in Interest.............................................................................9

         7.6      Delays or Omissions.............................................................................9

         7.7      Force Majeure...................................................................................9

         7.8      Captions........................................................................................9

         7.9      Number and Gender..............................................................................10

         7.10     Notices........................................................................................10

         7.11     Computation of Time............................................................................10

         7.12     Costs and Expenses.............................................................................10

         7.13     Counterparts...................................................................................10

         7.14     Status.........................................................................................10

         7.15     Other Activities of Titan......................................................................10
</TABLE>

                                      ii.
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Table of Contents/Authorities.<PAGE>

                          SUBORDINATED PROMISSORY NOTE

$ Not to Exceed $75,000,000                                      AUGUST 4, 2000
                                                          San Diego, California

         FOR VALUE RECEIVED, SB OPERATING CO., a Delaware corporation
("BORROWER"), hereby unconditionally promises to pay to the order of THE TITAN
CORPORATION, a Delaware corporation ("LENDER"), in lawful money of the United
States of America and in immediately available funds, the principal sum not to
exceed seventy-five million dollars ($75,000,000) (the "LOAN") together with
accrued and unpaid interest thereon, each due and payable on the dates and in
the manner set forth below.

         1. PRINCIPAL REPAYMENT. The outstanding principal amount of the Loan
shall be due and payable on August 4, 2005, provided that Borrower shall not use
any proceeds from the initial public offering of SureBeam Corporation to pay any
principal or interest on the Loan or pay principal or interest on any
re-financing of this indebtedness with outside third parties. If Borrower sells
any of its assets other than in the ordinary course of its business or if
Borrower obtains a credit facility from a third party lender and the facility
permits the use of proceeds to repay existing indebtedness, then Borrower may
with Lender's approval prepay the Loan in an amount equal to the net proceeds
from the sale of the assets or the net proceeds from the credit facility. Net
proceeds shall be the gross proceeds of the asset sale or credit facility, as
applicable, less all of the transaction costs, including commitment fees,
brokerage or investment banking fees, professional fees and other expenses, and
less any taxes payable by Borrower with respect to such transaction. There shall
be no prepayment penalty or premium for any early payment of principal.

         2. INTEREST RATE. Borrower further promises to pay interest on the
outstanding principal amount hereof from the date hereof until payment in full,
which interest shall be payable at the rate of higher of (i) the interest rate
payable by Lender on its senior credit facility during the period for which
interest is accruing or (ii) ten percent (10%) per annum, subject to the maximum
rate permitted by law (which under the laws of the State of California shall be
deemed to be the laws relating to permissible rates of interest on commercial
loans). Interest shall be due and payable quarterly in arrears on April 15, July
15, October 15 and January 15, commencing on January 15, 2001 and shall be
calculated on the basis of a 360-day year for the actual number of days elapsed.

         3. PLACE OF PAYMENT. All amounts payable hereunder shall be payable at
the Lender, unless another place of payment shall be specified in writing by
Lender.

         4. APPLICATION OF PAYMENTS. Payment on this Note shall be applied first
to accrued interest, and thereafter to the outstanding principal balance hereof.

         5. DEFAULT. Each of the following events shall be an "EVENT OF DEFAULT"
hereunder:

                   (a) Borrower fails to pay timely any of the principal amount
due under this Note on the date the same becomes due and payable or any accrued
interest or other amounts due

<PAGE>

under this Note on the date the same becomes due and payable or within five (5)
business days thereafter;

                   (b) Borrower files any petition or action for relief under
any bankruptcy, reorganization, insolvency or moratorium law or any other law
for the relief of, or relating to, debtors, now or hereafter in effect, or makes
any assignment for the benefit of creditors or takes any corporate action in
furtherance of any of the foregoing; or

                   (c) An involuntary petition is filed against Borrower (unless
such petition is dismissed or discharged within sixty (60) days) under any
bankruptcy statute now or hereafter in effect, or a custodian, receiver,
trustee, assignee for the benefit of creditors (or other similar official) is
appointed to take possession, custody or control of any property of Borrower.

Upon the occurrence of an Event of Default hereunder, all unpaid principal,
accrued interest and other amounts owing hereunder shall, at the option of
Lender, and, in the case of an Event of Default pursuant to (b) or (c) above,
automatically, be immediately due, payable and collectible by Lender pursuant to
applicable law.

         6. SUBORDINATION. The indebtedness evidenced by this Note is hereby
expressly subordinated, to the extent and in the manner hereinafter set forth,
in right of payment to the prior payment in full of the Senior Indebtedness.

         "SENIOR INDEBTEDNESS" shall mean, unless expressly subordinated to or
made on a parity with the amounts due under this Note, the principal of, unpaid
interest on and amounts reimbursable, fees, expenses, costs of enforcement and
other amounts due in connection with (a) indebtedness of Borrower to banks or
commercial finance or other lending institutions regularly engaged in the
business of lending money excluding venture capital, investment banking or
similar institutions and their affiliates which sometimes engage in lending
activities but which are primarily engaged in investments in equity securities),
whether or not secured, and (b) any such indebtedness or any debentures, notes
or other evidence of indebtedness issued in exchange for such Senior
Indebtedness, or any indebtedness arising from the satisfaction of such Senior
Indebtedness by a guarantor.

                  6.1 INSOLVENCY PROCEEDINGS. If there shall occur any
receivership, insolvency, assignment for the benefit of creditors, bankruptcy,
reorganization, or arrangements with creditors (whether or not pursuant to
bankruptcy or other insolvency laws), sale of all or substantially all of the
assets, dissolution, liquidation, or any other marshaling of the assets and
liabilities of Borrower, (a) no amount shall be paid by Borrower in respect of
the principal of, interest on or other amounts due with respect to this Note at
the time outstanding, unless and until the principal of and interest on the
Senior Indebtedness then outstanding shall be paid in full, and (b) no claim or
proof of claim shall be filed by or on behalf of Lender which shall assert any
right to receive any payments in respect of the principal of and interest on
this Note except subject to the payment in full of the principal of and interest
on all of the Senior Indebtedness then outstanding.

                  6.2 DEFAULT ON SENIOR INDEBTEDNESS. If there shall occur an
event of default which has been declared in writing with respect to any Senior
Indebtedness, as defined therein,

                                       2.

<PAGE>

or in the instrument under which it is outstanding, permitting the holder to
accelerate the maturity thereof and Lender shall have received written notice
thereof from the holder of such Senior Indebtedness, then, unless and until such
event of default shall have been cured or waived or shall have ceased to exist,
or all Senior Indebtedness shall have been paid in full, no payment shall be
made in respect of the principal of or interest on this Note unless within one
hundred eighty (180) days after the happening of such event of default the
maturity of such Senior Indebtedness shall not have been accelerated. Not more
than one notice may be given to Lender pursuant to the terms of this SECTION 6.2
during any 365 day period.

                  6.3 FURTHER ASSURANCES. By acceptance of this Note Lender
agrees to execute and deliver customary forms of subordination agreement
requested from time to time by the holders of Senior Indebtedness and, as a
condition to Lender's rights hereunder, Borrower may require that Lender execute
such forms of subordination agreement, provided that such forms shall not impose
on Lender terms less favorable than those provided herein.

                  6.4 OTHER INDEBTEDNESS. No indebtedness which does not
constitute Senior Indebtedness shall be senior in any respect to the
indebtedness represented by this Note.

                  6.5 SUBROGATION. Subject to the payment in full of all Senior
Indebtedness, Lender shall be subrogated to the rights of the holder(s) of such
Senior Indebtedness (to the extent of the payments or distributions made to the
holder(s) of such Senior Indebtedness pursuant to the provisions of this SECTION
6.5) to receive payments and distributions of assets of Borrower applicable to
the Senior Indebtedness. No such payments or distributions applicable to the
Senior Indebtedness shall, as between Borrower and its creditors, other than the
holders of Senior Indebtedness and Lender, be deemed to be a payment by Borrower
to or on account of this Note; and for purposes of such subrogation, no payments
or distributions to the holders of Senior Indebtedness to which Lender would be
entitled except for the provisions of this SECTION 6.5 shall, as between
Borrower and its creditors, other than the holders of Senior Indebtedness and
Lender, be deemed to be a payment by Borrower to or on account of the Senior
Indebtedness.

                  6.6 NO IMPAIRMENT. Subject to the rights, if any, of the
holders of Senior Indebtedness under this SECTION 6.6 to receive cash,
securities or other properties otherwise payable or deliverable to Lender,
nothing contained in this SECTION 6.6 shall impair, as between Borrower and
Lender, the obligation of Borrower, subject to the terms and conditions hereof,
to pay to Lender the principal hereof and interest hereon as and when the same
become due and payable, or shall prevent Lender, upon default hereunder, from
exercising all rights, powers and remedies otherwise provided herein or by
applicable law.

                  6.7 LIEN SUBORDINATION. Any lien or security interest of
Lender, whether now or hereafter existing in connection with the amounts due
under this Note, on any assets or property of Borrower or any proceeds or
revenues therefrom which Lender may have at any time as security for any amounts
due and obligations under this Note, shall be subordinate to all liens or
security interests now or hereafter granted to a holder of Senior Indebtedness
by Borrower or by law notwithstanding the date, order or method of attachment or
perfection of any such lien or security interest or the provisions of any
applicable law.

                                       3.

<PAGE>

                  6.8 APPLICABILITY OF PRIORITIES. The priority of the holder of
the Senior Indebtedness provided for herein with respect to security interests
and liens are applicable only to the extent that such security interests and
liens are enforceable and perfected and have not been avoided; if a security
interest or lien is judicially determined to be unenforceable or unperfected or
is judicially avoided with respect to any claim of the holder of the Senior
Indebtedness or any part thereof, the priority provided for herein shall not be
available to such security interest or lien to the extent that it is avoided or
determined to be unenforceable or unperfected. The foregoing notwithstanding,
Lender covenants and agrees that it shall not challenge, attack or seek to avoid
any security interest or lien to the extent that it secures any holder of the
Senior Indebtedness. Nothing in this SECTION 6.8 affects the operation of any
subordination of indebtedness or turnover of payment provisions hereof, or of
any other agreements among any of the parties hereto.

                  6.9 RELIANCE OF HOLDERS OF SENIOR INDEBTEDNESS. Lender, by its
acceptance hereof, shall be deemed to acknowledge and agree that the foregoing
subordination provisions are, and are intended to be, an inducement to and a
consideration of each holder of Senior Indebtedness, whether such Senior
Indebtedness was created or acquired before or after the creation of the
indebtedness evidenced by this Note, and each such holder of Senior Indebtedness
shall be deemed conclusively to have relied on such subordination provisions in
acquiring and holding, or in continuing to hold, such Senior Indebtedness.

         7. WAIVER. Borrower waives presentment and demand for payment, notice
of dishonor, protest and notice of protest of this Note, and shall pay all costs
of collection when incurred, including, without limitation, reasonable
attorneys' fees, costs and other expenses.

         The right to plead any and all statutes of limitations as a defense to
any demands hereunder is hereby waived to the full extent permitted by law.

         8. GOVERNING LAW. This Note shall be governed by, and construed and
enforced in accordance with, the laws of the State of California, excluding
conflict of laws principles that would cause the application of laws of any
other jurisdiction.

         9. SUCCESSORS AND ASSIGNS. The provisions of this Note shall inure to
the benefit of and be binding on any successor to Borrower and shall extend to
any holder hereof.

BORROWER                            SB OPERATING CO.

                                    By: /s/ illegible
                                       ----------------------------------------

                                    Printed Name:
                                                 ------------------------------

                                    Title:
                                          -------------------------------------

                                       4.

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