Document:

<PAGE>

                              CONFIDENTIAL TREATMENT REQUESTED UNDER 17 C.F.R.
                                     SECTIONS 200.80(B)(4), 200.83 AND 230.406

                      AMENDED AND RESTATED AGREEMENT #3 FOR

                                 PURCHASE OF AN

                                  X-RAY SYSTEM

                                  BY AND AMONG

                              SUREBEAM CORPORATION,

                             THE TITAN CORPORATION,

                                     (TITAN)

                                HAWAII PRIDE LLC,

                                  JOHN W. CLARK

                                       AND

                                  ERIC WEINERT

<PAGE>

                        AMENDED AND RESTATED AGREEMENT #3
                                      AMONG
                  SUREBEAM CORPORATION, THE TITAN CORPORATION,
                                HAWAII PRIDE LLC,
                         JOHN W. CLARK AND ERIC WEINERT

The purpose of this Amended and Restated Agreement #3 ("Agreement") is to
document the current understanding between SureBeam Corporation, a wholly owned
subsidiary of the Titan Corporation ("SureBeam"), Eric Weinert, John Clark and
Hawaii Pride, LLC ("HP LLC"). This Agreement will supersede the Agreement dated
November 22, 1999 among Titan Scan Corp., Hawaii Pride LLC, John W. Clark and
Eric Weinert, as well as the two amended and restated versions of such
Agreement. If this Agreement is acceptable, please sign it and return it to the
attention of the undersigned.

GENERAL PRINCIPALS OF THE AGREEMENT

1.   Hawaii Pride, LLC will acquire from SureBeam an X-ray system ("the X-ray
     system", "the X-ray" or, the "X-ray Project") for the purpose of
     disinfesting fruit, flowers and other products with X-rays.

2.   SureBeam, under the direction of Mr. Tom Allen, will be responsible for
     managing the construction of the X-Ray Project.

3.   APA, Inc. will provide certain engineering, architectural and consulting
     services on the X-ray Project as directed by SureBeam.

4.   The X-ray will be located in Keaau, Hawaii, the original site which was
     agreed to by all parties within HP LLC. The HP LLC will purchase the
     20-acre parcel. SureBeam will identify at least two contractors and obtain
     quotes in connection with building the facility at this site. SureBeam in
     conjunction with the other members of HP LLC will make the final
     determination with respect to contractor selection.

5.   HP LLC will obtain approximately $9 million worth of financing with the
     assistance of Web Financial Government Lending. Out of the total $9 million
     of financing, approximately $6.75 million worth of financing will be
     provided by the USDA Rural Development Agency. [...***...] will provide
     [...***...] worth of financing to HP LLC primarily related to the
     [...***...]. [...***...] also has a [...***...].

     In addition, as consideration for obtaining and maintaining the capital
     structure of HP LLC, [...***...] will receive a management fee of
     [...***...] for 2 years starting the first month of operation and
     [...***...] thereafter for the remaining life of the USDA loan. Nothing in
     this Agreement shall be construed or interpreted to mean that either
     [...***...] is responsible for operating the business of HP LLC.

                   * Confidential Treatment Requested

<PAGE>

6.   [...***...] financing of the project will be set up as convertible equity
     comprised of 3 different phases as follows:

     Phase 1 will be a loan in the amount of $1 million evidenced by a
     promissory note, that can be exercised for $1 at any time, at SureBeam's
     discretion, to convert $1 million of the [...***...] financing for exchange
     of 19.9% of the total equity of HP LLC.

     Phase 2 of the [...***...] relates to the [...***...] and [...***...] to
     [...***...]. This loan for [...***...] will be evidenced by a promissory
     note and will be recorded as [...***...] with an annual interest rate of
     10%. HP LLC will make monthly interest payments to SureBeam. This
     convertible preferred stock may be converted to an additional 30.1%
     equity in HP LLC upon the payment of $1.00 for protective measures only
     and only under the following circumstances:

          -    Mismanagement of HP LLC by the then current management; or
          -    An action resulting in default on loan payments and/or other
               financing requirements; or
          -    A liquidity event; or
          -    Generally not exercising appropriate fiduciary responsibility to
               operate the business in a prudent and reasonable manner.

     During Phase 3 of this Agreement, should any of the following occur:

          -    Mismanagement of HP LLC by the then current management; or
          -    An action resulting in default on loan payments and/or other
               financing requirements; or
          -    A liquidity event; or
          -    Generally not exercising appropriate fiduciary responsibility to
               operate the business in a prudent and reasonable manner.

     and this causes HP LLC to default on the loan payments or fails to comply
     with the USDA requirements both operationally or within the covenants of
     the loan, SureBeam may exercise, upon payment of an additional $1, a
     warrant for the total combined equity interests of [...***...] and
     [...***...] at the time of exercise. Additionally, if [...***...] exercises
     this warrant, the land and building will be transferred by the owners of
     HP LLC to [...***...].

     HP LLC will, on a monthly basis, prepare a covenant compliance worksheet,
     per its loan agreement with Web Financial, whereby all financial covenants
     are calculated and certified by the equity owners of HP LLC. To the extent
     HP LLC is compliant and funds are available to repay any of [...***...]
     outstanding advances, HP LLC will make such payments monthly to
     [...***...].

     7.   Once this Agreement is executed, and the X-ray project is successfully
     completed, as evidenced by HP LLC's acceptance thereof, and the initial
     loan for $1 million is converted to equity by SureBeam, the equity
     structure of HP LLC will be:

     -    [...***...] - [...***...]%
     -    [...***...] - [...***...]%
     -    Titan SureBeam or designee - 19.9%

                   * Confidential Treatment Requested
<PAGE>

     Profit and losses of HP LLC along with any distributions made will be
     allocated in accordance with the equity ownership of HP LLC.

     The equity owners of HP LLC will be restricted as to any sale or transfers
     of their ownership interest in HP LLC as follows:

     The selling shareholder's equity interest shall be sold equally to the
     shareholders who wish to acquire such interest. If only one of the
     shareholders wishes to purchase the equity interest of the selling
     shareholder, then it may acquire the selling shareholder's interest in its
     entirety. If neither HP LLC nor any of the HP LLC equity owners wish to
     purchase the selling shareholder's equity interest, then the selling
     shareholder may sell its interest to an unrelated third party.

          Under any of the above scenarios, the equity sale price will be
          determined as follows:

          -    Mutual agreement between the buying and selling parties

                                Or, if that fails

          -    A valuation will be made by an independent public accounting
               firm, the cost of which valuation will be split by the buying and
               selling party.

         In the event the selling shareholder sells its shares to an unrelated
         third party, the non-participating shareholders must first give consent
         to such third party sale as well as consent to the price of the shares
         to be sold.

8.   The basic financial model supporting the X-ray project, HP LLC, and,
     obtaining the financing, is based on the ability of HP LLC to obtain
     commitments from potential customers to have product processed at the HP
     LLC X-ray site.

9.   The total aggregate capital cost required to have the X-ray operational is
     [...***...] dollars ($US). Once the X-ray project is initiated, the
     estimated time to complete the X-ray project is expected to be [...***...].

10.  SureBeam represents that it will use good manufacturing practices in
     accordance with applicable USDA regulations and requirements. SureBeam
     agrees to maintain and properly calibrate all equipment and maintain
     appropriate records, and SureBeam agrees to use appropriately trained
     operators for each aspect of the processing, if so separately engaged to
     perform this service by HP LLC. SureBeam will provide an X-ray system that
     will meet the Animal Plant Health Inspection Services standards relative to
     the irradiation of fruit.

11.  SureBeam will provide HP LLC with access to a working capital line of
     credit up to a total aggregate amount of $[...***...] prior to obtaining
     USDA funding. The line of credit will be secured by a lien on the assets of
     HP LLC. The interest rate will be at [...***...].

12.  HP LLC will be responsible for paying [...***...] of the costs and expenses
     related to the X-ray project. [...***...] total costs and expenses are
     currently estimated to be approximately $[...***...]. This includes all
     capital costs and pre operating costs. SureBeam will be selling an X-ray
     system to HP LLC. The cost of SureBeam's component of the X-ray system
     will be $[...***...]. SureBeam's component, as described on Exhibit I,
     includes the following:

                   * Confidential Treatment Requested
<PAGE>

     -    Electron acceleration and controls
     -    Product conveyers
     -    Equipment assembly
     -    Equipment startup and validation
     -    Dosemetry equipment, maintenance training and operating training
     -    X-ray target

     The payment milestone from HP LLC to SureBeam for the $[...***...] SureBeam
     component will be made as follows:

     Payment #1 - $[...***...] upon successful closure of financing and funding
     received

     Payment #2 - $[...***...] due at HP LLC's acceptance of the SureBeam
     component

     All payments hereunder will be made in US dollars and are exclusive of
     taxes and shipping charges.

     Once SureBeam exercises the conversion option in Phase 1 of this Agreement,
     $1 million will be contributed from Titan or $1 million will be converted
     from the outstanding Titan financing and converted into 19.9% equity
     interest in HP LLC. The 19.9% equity interest received by SureBeam will be
     [...***...]. In other words, [...***...] will [...***...], in its
     [...***...] so that [...***...].

     13.  Any references to this Agreement that are made in any other related
     agreements between the parties, shall refer only to this Amended and
     Restated Agreement #3 and not to any previous version.

                   * Confidential Treatment Requested
<PAGE>

CONFIDENTIALITY

The parties anticipate that HP LLC, John W. Clark, Eric Weinert and SureBeam may
learn confidential and proprietary information about each other. These parties
on behalf of themselves, employees and agents, agree to keep all such
proprietary information confidential and not disclose such information directly
or indirectly to any third party or use it for any other purpose without prior
written authorization from an authorized representative of other parties
organization. These confidentiality requirements will not apply to the
following: (1) information parties knew prior to signing this Agreement; (2)
information that is publicly known or becomes publicly known through no breach
of this Agreement, and (3) information that rightfully obtained by parties from
any third party who has no duty of confidentiality. Parties agree to take all
necessary steps to protect confidential information from distribution or
disclosure. The obligations of this paragraph continue in perpetuity after this
Agreement terminates and apply to employees and agents of parties.

LIABILITY AND INDEMNIFICATION

SureBeam's obligations under this Agreement are limited to providing the
services in accordance with the provisions of this Agreement. Except as set out
in this Agreement, SureBeam makes no other representations or warranties of any
kind, express or implied, including without limitation, the implied warranties
of merchantability and fitness for a particular purpose and non-infringement.
Subject to the preceding sentence, HP LLC will defend, indemnify and hold
SureBeam harmless from the following items described in this paragraph relating
to the services SureBeam will provide as described in this Agreement. These
items include any loss, damage, cost, expense (including attorney fees), claim
or liability arising out of or relating to this Agreement including, without
limitation, any liability of HP LLC relating to a product recall. For purposes
of this paragraph, the "Company" means SureBeam, The Titan Corporation, all
subsidiary and related companies as well as all employees, agents, officers and
directors of all such entities. This provision does not apply to liability
resulting from illegal acts or gross negligence of the Company. SureBeam is not
liable for any indirect, special, consequential or punitive damages of any kind
under any circumstances regardless of the nature of the claim or liability.

ARBITRATION

The parties agree to submit all disputes they cannot resolve themselves to final
and binding arbitration held in San Diego, California. American Arbitration
Association ("AAA") rules relating to commercial arbitration will apply. The
parties involved in the dispute agree jointly to select a single arbitrator from
an AAA panel. If the parties cannot agree on an arbitrator, they will each
select an arbitrator and the arbitrators so selected will pick the single
arbitrator who will decide the dispute. The parties agree the arbitrator will
not have the authority to award punitive or consequential damages. The parties
involved in the arbitration proceeding will split equally the costs of the
arbitration and each such party will be responsible for payment of its own legal
fees. Arbitration awards are not appealable. The parties can each enforce them
through any court of competent jurisdiction. The arbitrator must apply
California law and has exclusive authority to resolve any dispute relating to
the interpretations, applicability or formation of this Agreement. The parties
waive all rights to adjudication in a court of law and to a venue other than San
Diego, CA.

<PAGE>

FORCE MAJEURE

If any party is unable to carry out its obligations under this Agreement
excluding the obligation to pay money, because of force majeure, the parties
agree to suspend performance until the event creating the force majeure is over.
For this purpose force majeure includes storms, floods, earthquakes, other acts
of God, the acts of civil or military authority, quarantine restrictions, riots,
strikes, fires, lockouts, other labor disputes, commercial impossibility,
explosions and bombings, the inability to obtain permits or other governmental
approvals, or because of any other cause or causes beyond the reasonable control
of the party seeking to be excused from performance. The party unable to perform
agrees to resume performance of its obligations upon the termination of the
event or cause, which excused performance.

MISCELLANEOUS PROVISIONS

This Agreement will be interpreted and enforced under California law, without
regard to its conflicts of laws principles. It will be interpreted in accordance
with its plain meaning and not strictly for or against any party, regardless of
the drafter. The parties will not consider any part of this Agreement waived,
amended or modified unless that waiver, amendment or modification is in writing
and signed by all parties. The terms of this Agreement may not be changed or
modified without the prior written consent of all parties. If there is a
discrepancy between the terms of any purchase order or invoice and any of the
terms in this Agreement, the terms of this Agreement will prevail. This
Agreement is binding upon and inures to the benefit of the parties and their
respective successors in interest. If a court or arbitrator determines any
portion of this Agreement is not valid, or enforceable, the remaining parts of
the Agreement remain valid. This Agreement contains the entire understanding of
the matters set forth in this document. It supersedes all other prior written
and oral agreements and understandings of such matters. The parties each
acknowledge it has the authority to sign this Agreement. In addition, the
parties each acknowledges that it has not relied on any written or oral
representations other than those contained in this Agreement. Any notices
required under this Agreement will be made in writing and send by first class
certified mail, personal delivery or expedited overnight carrier. Unless any of
the parties notifies the others to the contrary, the addresses at the beginning
of this Agreement will be used for notice purposes.

Sincerely,

/s/ Larry Oberkfell

Larry Oberkfell
President & CEO
SureBeam Corporation

<PAGE>

                                                                      EXHIBIT I

                           SUMMARY OF ESTIMATED TOTAL
                        CAPITAL COSTS OF HAWAII PRIDE LLC
                       X-RAY SYSTEM FACILITY (US DOLLARS)

<TABLE>
<S>                                                        <C>
Land                                                       $ [...***...]

Total building & infrastructure
 Cost to support X-ray system                                [...***...]

Total X-ray system costs (SureBeam component)                [...***...]

Total APA support costs                                      [...***...]

Equipment & furniture & fixtures                             [...***...]

Total fruit packing line                                     [...***...]
                                                                 -------

Total estimated costs                                        [...***...]

Total cost "contingency"                                     [...***...]
                                                               ---------

Total estimated capital costs                               $[...***...]
                                                              ==========
</TABLE>

                   * Confidential Treatment Requested
<PAGE>

Accepted and Agreed by:

By: /s/ Larry A. Oberkfell                          By: /s/ John W. Clark
   ---------------------------                         ------------------------

Title: President & CEO              Title: President
      ------------------------            -----------------------

Date: October 2, 2000               Date: October 2, 2000
     -------------------------           ------------------------

SureBeam Corporation                Hawaii Pride LLC

By: /s/ Eric Weinert                               By: /s/ John W. Clark
   ---------------------------                         ------------------------

Title: Vice President, Sales        Title: President
      ------------------------            -----------------------

Date: October 2, 2000               Date: October 2, 2000
     -------------------------           ------------------------

John W. Clark                                       Eric Weinert

By: /s/ Larry A. Oberkfell
   ---------------------------

Title: President & CEO
      ------------------------

Date: October 2, 2000
     -------------------------

The Titan Corporation

Signature Page to the Amended and Restated Agreement #3 for Purchase of an
X-Ray System<PAGE>

                                                                  Exhibit 10.12

                                        CONFIDENTIAL TREATMENT REQUESTED
                                        UNDER 17 C.F.R. SECTIONS 200.80 (B)(4),
                                        200.83 AND 230.406

            CONTRACT FOR PURCHASE AND SALE OF EQUIPMENT AND SERVICES

     This Contract for Purchase and Sale of Equipment and Services (the
Contract is made and entered into as of this 28th day of December, 1999 (the
Effective Date) by and between Zero Mountain Cold Storage, an Arkansas
Corporation (the Buyer) and Titan Scan Corp., a Delaware Corporation (the
seller) with reference to the following recitals of fact.

     RECITALS:

     A. Buyer is a cold storage facility owner and point of distribution for
poultry and other products.

     B. Seller is a Delaware corporation engaged in the business of designing,
manufacturing, selling, installing, operating and servicing product
pasteurization and sterilization equipment and systems, including electron beam
and x-ray equipment and systems.

     C. Buyer has agreed to purchase from Seller, and Seller has agreed to
sell to Buyer, an x-ray system to be used by Buyer for pasteurizing
sterilizing poultry and food products. Buyer has also agreed to purchase from
Seller, and Seller has agreed to sell to Buyer, all additional equipment and
systems required by Buyer on the terms and conditions contained in this
Contract.

     D. The parties are desirous of documenting their understanding of the
terms and conditions which will govern the purchase and sale transactions
contemplated herein.

     NOW, THEREFORE, the parties agree as follows:

     1. EQUIPMENT PURCHASED

     Upon the terms, and subject to the conditions set forth in this Contract,
Seller shall sell, transfer, assign, convey and deliver to Buyer, for the
purchase price specified in paragraph 2, below, one (1) SUREBEAM x-ray food cold
pasteurization sterilization system (the "System"). The System will conform in
all respects to the Final specifications which will be completed and delivered
to Buyer and be capable of meeting all USDA, and FDA specifications regarding
food irradiation on or before the date established in paragraph 2.1 of this
Contract for payment of the first installment payment in accordance with this
Contract. Buyer's consent shall not be unreasonably delayed or withheld. Below
is a summary of the preliminarily agreed upon System components. The Buyer and
the Seller will work together after execution of this agreement and jointly
prepare a detail System specifications list:

<PAGE>

     IN WITNESS WHEREOF, the parties hereto have executed this Contract as of
the effective date that is first set forth above. As Amended by Eric DeMarco and
Mark Rumsey.

                                      ZERO MOUNTAIN COLD STORAGE

                                      By: /s/ Mark Rumsey
                                         ---------------------------------------
                                              Mark Rumsey, President and CEO

                                      TITAN SCAN CORP.

                                      By: /s/ Eric DeMarco
                                         ---------------------------------------

<PAGE>

            CONTRACT FOR PURCHASE AND SALE OF EQUIPMENT AND SERVICES

     This Contract for Purchase and Sale of Equipment and Services (the
Contract is made and entered into as of this 28th day of December, 1999 (the
Effective Date) by and between Zero Mountain Cold Storage, an Arkansas
Corporation (the Buyer) and Titan Scan Corp., a Delaware Corporation (the
seller) with reference to the following recitals of fact.

     RECITALS:

     A. Buyer is a cold storage facility owner and point of distribution for
poultry and other products.

     B. Seller is a Delaware corporation engaged in the business of designing,
manufacturing, selling, installing, operating and servicing product
pasteurization and sterilization equipment and systems, including electron beam
and x-ray equipment and systems.

     C. Buyer has agreed to purchase from Seller, and Seller has agreed to
sell to Buyer, an x-ray system to be used by Buyer for pasteurizing
sterilizing poultry and food products. Buyer has also agreed to purchase from
Seller, and Seller has agreed to sell to Buyer, all additional equipment and
systems required by Buyer on the terms and conditions contained in this
Contract.

     D. The parties are desirous of documenting their understanding of the
terms and conditions which will govern the purchase and sale transactions
contemplated herein.

     NOW, THEREFORE, the parties agree as follows:

     1. EQUIPMENT PURCHASED

     Upon the terms, and subject to the conditions set forth in this
Contract, Seller shall sell, transfer, assign, convey and deliver to Buyer,
for the purchase price specified in (1) SUREBEAM x-ray food cold
pasteurization sterilization system (the "System"). The System will conform
in all respects to the Final specifications which will be completed and
delivered to Buyer and be capable of meeting all USDA, and FDA specifications
regarding food irradiation on or before the date established in paragraph 2.1
of this Contract for payment of the first installment payment in accordance
with this Contract. Buyer's consent shall not be unreasonably delayed or
withheld. Preliminary and Final Specifications are hereinafter referred to
collectively as "Equipment Specifications" and will be jointly determined by
Buyer and Seller:

         1. Electron Accelerator System and Controls;

<PAGE>

         2. All required product conveyors;

         3. Equipment assembly;

         4. Equipment status and validation;

         5. Dosimetry equipment: maintenance training and operating training;

         6. All necessary x-ray targets;

         7. Control system;

         8. All required System software; and

         9. All reasonable, customary Systems engineering.

         Seller shall also sell, transfer, assign, convey and deliver to Buyer
all non-proprietary, non-confidential System documentation, including, without
limitation, recommended spare parts list, service and maintenance schedules,
as-built drawings and schematics, and operations, training, service and/or
repair manuals (the "System Documentation").

     2. PURCHASE PRICE

     [...***...], the base purchase price [...***...] to be paid by Buyer to
Seller for the System shall be [...***...] dollars. [...***...](the "Purchase
Price"). The parties acknowledge that the Purchase Price is a "fixed fee"
which is deemed to include all sales and similar taxes, payment for all
delivery, transportation, installation, assembly, calibration, testing,
validation, and certification costs and expenses, as well as the provision of
all services incident thereto, all in accordance with the Equipment
Specifications.

     2.1 PAYMENT OF PURCHASE PRICE

     The Purchase Price to paid by Buyer to Seller for the System shall be paid
in installments in accordance with the following payment schedule:

     FIRST PAYMENT:        [...***...] of the Purchase Price upon the
                           [...***...].

                       *Confidential Treatment Requested
<PAGE>

     SECOND PAYMENT:       [...***...] of the Purchase Price upon the
                           expiration of [...***...] from the due date for
                           the first payment.

     THIRD PAYMENT:        [...***...] of the Purchase Price upon the
                           expiration of [...***...] from the due date for
                           the second payment.

     FOURTH PAYMENT:       [...***...] of the Purchase Price upon the
                           expiration of [...***...] from the due date for
                           the third payment.

     FINAL PAYMENT:        [...***...] of the Purchase Price shall be paid
                           either upon the expiration of [...***...] from
                           the due date of the forth payment, or acceptance of
                           the System by Buyer in accordance with paragraph 4
                           below, whichever date is later, provided however,
                           that the Final Payment shall be made by Buyer to
                           Seller no later than [...***...] so long as delivery
                           and/or acceptance of the System has not been delayed
                           due to circumstances beyond Seller's control.

     3. DELIVERY OF SYSTEM

     3.1 TIME OF DELIVERY

     The parties anticipate that once this Contract is executed, it will take
[...***...] from the date Buyer obtains the [...***...] to commence and complete
the Equipment Specifications and manufacture of the System. Seller agrees to
use commercially reasonable efforts to complete the System during this time
period, deliver it to Buyer, install it at Buyer's facilities, and render it
operational. Prior to the date Seller has completed the manufacture of the
System, Buyer and Seller shall agree, in writing, on the date for delivery
for the System to Buyer's facilities.

     3.2 PLACE OF DELIVERY

     Prior to the date Seller has completed the manufacture of the System,
Buyer shall specify, in writing, the location to which Seller shall deliver
the System. Seller shall thereafter deliver this System F.O.B. at the
location so identified by Buyer.

     4. INSTALLATION

     Upon delivery of the System, Seller shall properly assemble and install
the System and all components therof, at Buyer's facilities. Prior to
Buyer's acceptance, Seller shall also do all of the following:

          a. Properly calibrate and test the System, and all components
thereof, to ensure that it is operating properly and within acceptable
tolerances in accordance with the Equipment Specifications;

          b. Obtain, or provide Buyer with all necessary information and/or
documentation necessary for obtaining, all required federal, state, local
and/or other governmental approvals, licenses

                    *Confidential Treatment Requested
<PAGE>

and/or certifications required for the operation of the System, and its
components:

          c. Provide to Buyer, and its employees, the training as set forth
in the Equipment Specifications, in the proper use and operation of the
System, and each of its components, such that Buyer can properly operate the
System independently and without the continued assistance of Seller.

          d. Deliver to Buyer all System Documentation as required under
paragraph 1 of this Contract.

     The System shall be deemed accepted by Buyer upon performance by Seller
of items a-d of this Section 4, provided Seller is not in material breach of
any other term of this Contract.

     5. RISK OF LOSS

     The risk of loss, injury or destruction of the System, its components,
machinery, equipment and materials, from any cause whatsoever, shall be born
by the Seller until delivery to Buyer's facilities in accordance with
paragraph 3.2 of this Contract.

     6. WARRANTIES

     6.1 SELLER'S WARRANTIES

     Seller warrants that the System, and each of its components, will be
free from any defects in design, materials and workmanship for a period of
[...***...] (hereinafter the "Warranty Period") from the date of acceptance
of the System by the Buyer or [...***...] from the date of delivery of the
System, whichever first occurs. Seller further warrants that the System will
function in accordance with the Equipment Specifications, and that the System
will conform in all particulars to the requirements of any federal, state or
local governmental rule, regulation or standard governing the operation or
use of the System, including, without limitation, rules and regulations
promulgated by the United States Department of Agriculture. THE ABOVE
WARRANTIES ARE IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, AND
SELLER SPECIFICALLY WARRANTIES THIS EQUIPMENT FOR MERCHANT ABILITY AND
FITNESS FOR A PARTICULAR PURPOSE.

     Notwithstanding anything to the contrary, in no event shall Seller's
liability arising out of or in connection with Seller's performance under
this Contract exceed the Purchase Price.

     6.2 REPAIR OBLIGATION

     Promptly upon receipt of written notification from Buyer, Seller shall
inspect the equipment. If,

                    *Confidential Treatment Requested
<PAGE>

in Seller's opinion, there is a defect in design, materials or workmanship
covered by Seller's Warranty, then Seller shall repair or replace, at its
election, without cost or expense to Buyer, such defects in design, materials
or workmanship.

     7. [...***...] SEE ATTACHMENT:

     7.1 [...***...] SUPPLIER

     Except as set forth in paragraphs 7.2 and paragraph 8 hereof, Buyer
agrees that Seller shall be Buyer's [...***...] source for electron beam
x-ray or ionizing energy sterilization equipment, systems and Services. For
purposes of this Contract, the term "Services" shall mean and refer to those
services identified in paragraph 8 of this Contract.

     7.2 EXCEPTIONS TO [...***...] SUPPLIER PROVISIONS

     Buyer shall not purchase or otherwise obtain from [...***...] any
electron beam and/or x-ray technology product pasteurization or sterilization
equipment, systems or Services including but not limited to cobalt, cesium or
any ionizing radiation products unless:

          a. Seller is (i) in material breach of any of the terms of this
Contract, or the Operating Agreement, which is being executed concurrently
with this Contract; and (ii) Seller fails to cure such breach within a
reasonable time of receipt of notice from Buyer.

          b. Seller becomes insolvent or seeks protection, voluntarily or
involuntarily, under the Bankruptcy Laws;

          c. Seller ceases business, or ceases planning, designing,
manufacturing, installing, operating, repairing or maintaining irradiation
equipment and systems;

          d. Buyer requires irradiation equipment and/or systems (a) of a
type, size, configuration, capacity, performance or power not manufactured or
sold by Seller and/or (b) within a reasonable time frame, Seller fails to
provide such equipment and/or systems.

     8. ADMINISTRATIVE, CUSTOMER SUPPORT AND OTHER SERVICES

     Upon the written request of Buyer, Seller shall provide to Buyer
administrative, accounting and other customer support functions and technical
services (hereinafter "Services") in connection with the

                   * Confidential Treatment Requested
<PAGE>

operation of Buyer's business and the System.

     Any such Services that will be provided By Seller to Buyer at Seller's
cost are set forth in Exhibit C attached hereto.

     The Services set forth in Exhibit D are those Services that Buyer shall
obtain exclusively from Seller. Buyer shall not procure or arrange for such
Services from any supplier other than Buyer. Such Services set forth in
Exhibit D shall be provided by Seller to Buyer at Buyer's expense  at terms
and conditions to be set forth in a separate written agreement between the
parties. That separate agreement will set forth all details of such Services
including, without limitation, the type, cost and quantity of such Services.

     9. TERMINATION

     This Contract, and the parties' duties and obligations hereunder, may
terminated for cause by either party, upon the occurrence of one or more of
the following events:

          a. The other party becomes insolvent or seeks protection,
voluntarily or involuntarily, under the Bankruptcy Laws;

          b. The other party is in default of any material provision of this
Contract and such default has not been Promptly commenced and diligenctly
completed within a reasonable time after receipt of notice thereof;

          c. Buyer fails to make payment [...***...] pursuant to the terms
hereof on the due date and such delinquency is not cured within [...***...].

     10. INDEMNITY

          a. Buyer shall indemnify and hold Seller harmless and will, upon
request, defend Seller against all actions, proceedings, claims, demands,
suits, outlays, damages or expenses, including reasonable attorneys fees and
other costs that may be assessed against Seller, arising out of the acts or
omissions of Buyer, its representatives, agents or employees.

          b. Seller shall indemnify and hold Buyer harmless and will, upon
request, defend Buyer against all actions, proceedings, claims, demands,
suits, outlays, damages, or expenses, including reasonable attorneys fees and
other costs that may be assessed against Buyer arising out of the acts or

                   * Confidential Treatment Requested
<PAGE>

omissions of Seller, its representatives, agents or employees.

        c. IN NO EVENT SHALL EITHER PARTY BE LIABLE TO THE OTHER FOR ANY
INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES EVEN IF SUCH PARTY HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

    11. CONFIDENTIALITY

    The parties anticipate that both Buyer and Seller may learn confidential
and proprietary information of the other as a consequence of the transactions
contemplated by this Contract. The parties therefore agree, on behalf of
themselves, their agents, employees, parents, subsidiaries, officers,
directors, and all other persons acting on or for their behalf, to keep all
proprietary information confidential and to not disclose such information,
either directly or indirectly, to any third party, or to use any such
proprietary information for any purpose other than performance of this
Contract without the prior written authorization from an authorized
representative of the appropriate party. For purposes of this Contract, the
information described below shall not be deemed Confidential or Proprietary
Information:

          a. Information that either party knows about the other prior to
the execution of this Contract;

          b. Information that is publicly known, or becomes publicly known,
through no breach by either party to this Contract; and

          c. Information that is rightfully obtained by either party from any
third party who has no duty of confidentiality under this Contract.

    The parties mutually agree to take all necessary steps, and to prepare
and execute all documents necessary, to protect and prohibit the disclosure
of confidential information under this paragraph.

    12. ASSIGNMENT AND/OR DELEGATION

    Neither this Contract, nor any right, obligation or duty hereunder of
either party, may be assigned to, or assumed or performed by, any third party
without the prior written consent of the other party. Any purported
assignment or delegation made without compliance with the requirements of
this paragraph 13 shall be wholly void and ineffective for all purposes.

    13. INTEGRATION

    This Contract sets forth the entire agreement and understanding of the
parties with respect to

<PAGE>

transactions contemplated hereby and supercedes any and all prior contracts,
agreements and understandings of the parties relating to the subject matter
hereof. No representation, promise or statement of intention has been made by
any party to the other which is not embodied in this Contract.

    14. AMENDMENT/WAIVER

    This Contract may only be amended, modified, superceded or canceled, and
any of the terms, representations, warranties, covenants and conditions may
be waived, only by an instrument in writing executed by the parties, or in the
case of a waiver, by the party waiving compliance.

    15. FORCE MAJEURE

    If any party is unable to carry out its obligation under this Contract
because of force majeure, the parties agree to suspend performance until the
event creating the force majeure is over. For purpose of this Contract, force
majeure includes, but is not limited to, storms, floods, earthquakes, acts of
God, the acts of civil or military authority, quarantine restrictions, riots,
strikes, fires, lock-outs, labor disputes, commercial impossibility,
explosions and bombings, the inability to obtain permits or other
governmental approvals, or because of any other cause or causes beyond the
reasonable control of the party seeking to be excused from performance. The
party who is unable to perform because of a force majeure agrees to resume
performance of its obligations under this Contract upon the termination of
the event or events which excused performance.

    16. NOTICES

    All notices, requests, demands and other communications which are
required or permitted to be given under this Contract shall be in writing and
shall be deemed to have been duly given upon delivery if delivered
personally, or two (2) days after mailing by registered or certified mail,
return receipt requested, postage prepaid as follows:

          1. If to Buyer:     Zero Mountain Cold Storage
                              8425 Hwy 45 South
                              Fort Smith, AR 72906

          2. If to Seller:    Titan Scan Corp.
                              3033 Science Park Road
                              San Diego, California 92121

<PAGE>

or to such person or address as any party shall have specified by notice in
writing, to other parties hereto.

    17. INTERPRETATION

    This Contract shall be governed by and construed in accordance with the
laws of the State of California.

    18. SEVERABILITY

    The invalidity or unenforceability of any provision of this Contract
shall not affect the validity or enforceability of any other provision
contained herein.

    19. ARBITRATION

    Except as otherwise provided in the Agreement, any controversy between
the parties arising out of this Agreement shall be submitted to the American
Arbitration Association for arbitration in San Diego, California. The costs
of arbitration, including any American Arbitration Association administration
fee, the arbitrator's fee, and costs for use of facilities during the
hearings, shall be borne equally by the parties to the arbitration.
Attorney's fees may be awarded to the prevailing or most prevailing party at
the discretion of the arbitrator. The provisions of Sections 1282.6, 1283 and
1283.05 of the California Code of Civil Procedure apply to the arbitration.
The arbitrator shall not have any power to alter, amend, modify or change any
of the terms of this Agreement not to grant any remedy which is either
prohibited by the terms of this Agreement, or not available in a court of law.

    20. EXISTING DEBT OBLIGATION

    Since the buyer is currently under obligations to The Metropolitan Life
Insurance Company with [...***...].

    21. JOINT VENTURES

    The buyer and seller agree to form a limited liability corporation which
will be the buyer of this system. This company will have the right of first
refusal to provide food pasteurization services to warehouses or
distributors of refrigerated food products.

                   * Confidential Treatment Requested
<PAGE>

     IN WITNESS WHEREOF, the parties hereto have executed this Contract as of
the effective date that is first set forth above.

                                       ZERO MOUNTAIN COLD STORAGE

                                       By: /s/ Mark Rumsey
                                          ----------------------------------
                                          Mark Rumsey, President and CEO

                                       TITAN SCAN CORP.

                                       By: /s/ Eric DeMarco
                                          ----------------------------------
                                          Eric DeMarco

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