Document:

<PAGE>
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                                                                               .

                                                                    EXHIBIT 10.1

<TABLE>
<S>                                                                             <C>                          <C>
                                                                                1. CONTRACT ID CODE          PAGE OF PAGES
AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT                                                             1       3
------------------------------------------------------------------------------------------------------------------------------------
2.  AMENDMENT/MODIFICATION NO.             3.  EFFECTIVE DATE        4.  REQUISITION/PURCHASE NO.  5.  PROJECT NO. (If applicable)
                    1                      See Block 16C.
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6.  ISSUED BY                         CODE                           7.  ADMINISTERED BY (If other than Item 6)     CODE
                                           -------------------------

    TSA/STDO                                                             TSA/STDO
    590 Herndon Parkway, Suite 120                                       590 Herndon Parkway, Suite 120
    Herndon, VA  20170                                                   Herndon, VA  20170
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8.  NAME AND ADDRESS OF CONTRACTOR (No., street, county, State, and Zip Code)   (X)  9A.  AMENDMENT OF SOLICITATION NO.

    InVision Technologies, Incorporated
    7157 Gateway Boulevard
    Newark, CA  94560
                                                                                     -----------------------------------------------
                                                                                     9B.  DATED (SEE ITEM 11)

                                                                                ----------------------------------------------------
                                                                                     10A. MODIFICATION OF CONTRACT/ORDER NO.
                                                                                 X
                                                                                          DTSA20-03-C-01900
                                                                                     -----------------------------------------------
                                                                                     10b. DATED (SEE ITEM 13)

--------------------------------------------------------------------------------
CODE                                  FACILITY CODE                                       05 August 2003
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                              11.  THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS
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[ ] The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of
Offers [ ] is extended, [ ] is not extended. Offers must acknowledge receipt of this amendment prior to the hour and
date specified in the solicitation or as amended, by one of the following methods:

(a) By completing Items 8 and 15, and returning ____ copies of the amendment; (b) By acknowledging receipt of this
amendment on each copy of the offer submitted; or (c) By separate letter or telegram which includes a reference to the
solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGEMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE
RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this
amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each
telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and
date specified.
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12.  ACCOUNTING AND APPROPRIATION DATA (If required)
     N/A
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                              13.  THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS,
                                   IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.
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     A.    THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN
     THE CONTRACT ORDER NO. IN ITEM 10A.

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     B.    THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying
     office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

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     C.    THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

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X    D.    OTHER (Specify type of modification and authority)

       PURSUANT TO THE BILATERAL AGREEMENT BETWEEN THE PARTIES
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E. IMPORTANT: Contractor [ ] is not, [X] is required to sign this document and return 2 copies to the issuing office.
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14.  DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject
     matter where feasible.)

     See Page 2

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15A. NAME AND TITLE OF SIGNER (Type or print)                    16A.  NAME AND TITLE OF CONTRACTING OFFICER (Type or print)
                                                                       Jamie Thompson
DAVID M. PILLOR / SVP
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15B. CONTRACTOR/OFFEROR                      15C.  DATE SIGNED   16B.  UNITED STATES OF AMERICA          16C. DATE SIGNED

/s/ David M. Pillor                          12 March 2004       BY    /s/ JAMIE THOMPSON                     12 March 2004
----------------------------------------                               ----------------------------------
(Signature of person authorized to sign)                               (Signature of Contracting Officer)
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NSN 7540-01-152-8070                                          30-105                             STANDARD FORM 30 (Rev. 10-83)
PREVIOUS EDITION UNUSABLE                                                                        Prescribed by GSA
                                                                                                 FAR (48 CFR) 53.243
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</TABLE>

<PAGE>

                                                               DTSA02-03-C-01900
                                                          Modification Number: 1
                                                                     Page 2 of 3

The purpose of this modification to DTSA20-03-C-01900 is to: (1) add a contract
line item for [***] Incentive; (2) revise CLINs 0001A, 0001B, 0002 and 0003
payment terms; and (3) make administrative changes to the Clause G.1 entitled
Contract Administration (TSA). All other terms and conditions are unchanged and
remain in full force. Contract DTSA02-03-C-01900 is modified as follows:

      1.  Under Section B, entitled "Supplies/Services & Price/Cost", the
          following Contract Line Item Number is added:

<TABLE>
<CAPTION>
                                     UNIT
CLIN    DESCRIPTION    QTY    UNIT   PRICE   TOTAL
<S>     <C>            <C>    <C>    <C>     <C>
0008    [***]
        Incentive
</TABLE>

      2.  Under Section G.1, entitled "Contract Administration (TSA)", the
          Contracting Officer's Technical Representative (COTR) and Contracting
          Officer information are revised to:

          Contracting Officer's Technical
          Representative (COTR):          Transportation Security Administration
                                          Mr. Domenic Bianchini
                                          590 Herndon Parkway, Suite 120
                                          Herndon, VA  20170
                                          Telephone (703) 796-7107
                                          Fax (703) 707-5675

          Contracting Officer:            Transportation Security Administration
                                          Mr. Jamie Thompson
                                          590 Herndon Parkway, Suite 120
                                          Herndon, VA 20170
                                          Telephone (703) 796-7125
                                          Fax (703) 707-5675

      3.  Under Section H.9, entitled "Payment Terms", the Payment Terms for
          CLIN 0001A, 0001B, 0002 and 0003, Production units are hereby revised
          to:

          Payment Terms:  For CLIN(s) 0001A, 0001B, 0002 and 0003, Production
          Units:

          -        35% of the CLIN price at the time of order;

* Confidential treatment requested.

<PAGE>

                                                               DTSA02-03-C-01900
                                                          Modification Number: 1
                                                                     Page 2 of 3

          -       60% of the CLIN price at satisfactory completion of Factory
                  Acceptance Test. Satisfactory completion includes a signed
                  form FAA-256, Inspection Report of Material and/or Services;
                  and

          -       5% of the CLIN price at satisfactory completion of Site
                  Acceptance Test, but not later than 45 days after delivery,
                  whichever occurs first.

      4.  All other terms and conditions remain unchanged and in full force and
          effect.<PAGE>
                                                                               .
                                                                               .
                                                                               .

                                                                    EXHIBIT 10.2

<TABLE>
<S>                                <C>                                                                   <C>
                                                                                                         PAGE OF PAGES
                                   ORDER FOR SUPPLIES OR SERVICES                                         1        6
---------------------------------------------------------------------------------------------------------------------------
IMPORTANT: Mark all packages and papers with contract and/or order numbers
---------------------------------------------------------------------------------------------------------------------------
1.  DATE OF ORDER            2.  CONTRACT NO. IF ANY                                  6.  SHIP TO:
                                                                -----------------------------------------------------------
    12 March 2004                DTSA20-03-C-01900              a.  NAME OF CONSIGNEE
                                                                    Mr. Domenic Bianchini
---------------------------------------------------------------------------------------------------------------------------
3.  DATE REQUESTED           4.  REQUISITION/REFERENCE NO.      b.  STREET ADDRESS

    10 March 2004                PREQ-04-DEP-044.1                  590 HERNDON PKWY, SUITE 120
---------------------------------------------------------------------------------------------------------------------------
5.  ISSUING OFFICE Address Correspondence to                    c.  CITY                 d. STATE   e.  ZIP CODE

    TSA/STDO                                                        HERNDON                 VA          20170
---------------------------------------------------------------------------------------------------------------------------
                           7.  TO:
---------------------------------------------------------------------------------------------------------------------------
    a.  NAME OF CONTRACTOR                                      f.  SHIP VIA

        INVISION TECHNOLOGIES                                       FOB DESTINATION
---------------------------------------------------------------------------------------------------------------------------
    b.  COMPANY NAME                                                                 8.  TYPE OF ORDER
                                                                -----------------------------------------------------------
        INVISION TECHNOLOGIES                                   [ ] a. PURCHASE          [X] b. DELIVERY
----------------------------------------------------------------
    c.  STREET ADDRESS

        7157 Gateway Blvd                                       REFERENCE YOUR:
----------------------------------------------------------------               -----
    d.  CITY     e.  STATE   f.  ZIP  CODE                      Please furnish the       Except for billing
                                                                following on the         instructions on the
        Newark       CA          94560                          terms and conditions     reverse, this delivery
                                                                specified both sides     order is subject to
                                                                of the sheet, if any     instructions contained
                                                                including delivery       on this side only of
                                                                as indicated.            this form and is issued
                                                                                         subject to the terms
                                                                                         and conditions of the
                                                                                         above numbered
                                                                                         contract.
---------------------------------------------------------------------------------------------------------------------------
9.  ACCOUNTING AND APPROPRIATION DATA                       10. REQUISITION OFFICE
    See Block 17                                                Transportation Security Administration
---------------------------------------------------------------------------------------------------------------------------
11. BUSINESS CLASSIFICATION (Check appropriate box(es))
    [ ] a. SMALL  [ ] b. OTHER THAN SMALL   [ ] c. DISADVANTAGED   [ ] d. WOMEN-OWNED
---------------------------------------------------------------------------------------------------------------------------
12. F.O.B. POINT                            14. GOVERNMENT B/L NO.   15. DELIVER TO F.O.B. POINT     16. DISCOUNT TERMS
                                                                         ON OR BEFORE (Date)
    ORIGIN
-------------------------------------------
                13. PLACE OF
-------------------------------------------
    a.  INSPECTION           b.  ACCEPTANCE
            CA                       CA
---------------------------------------------------------------------------------------------------------------------------
                                            17. SCHEDULE (See reverse for Rejections)
---------------------------------------------------------------------------------------------------------------------------
                                                            QUANTITY           UNIT PRICE       AMOUNT      QUANTITY
  ITEM NO.           SUPPLIES OR SERVICES                   ORDERED    UNIT   (IN DOLLARS)   (IN DOLLARS)   ACCEPTED
   (a)                       (b)                              (c)      (d)        (e)            (f)           (g)
---------------------------------------------------------------------------------------------------------------------------
              See attached Delivery Order
              HSTS04-04-F-DEP044.1/Delivery Order #4

              Accounting Data:

              05AV000000-2004-1B3FDEPA13-3F40000000-31673
                    [***]

              05AV000000-2004-1B3FDEPB31-3F40000000-31673
                    [***]
---------------------------------------------------------------------------------------------------------------------------
              18.  SHIPPING POINT        19.  GROSS SHIPPING WEIGHT    20.  INVOICE NO.

              ----------------------------------------------------------------------------
                                         21.  MAIL INVOICE TO:
              ----------------------------------------------------------------------------
SEE BILLING   a. NAME                                                                        $108,000,000   17(H) Total
INSTRUCTIONS     Transportation Security Administration / Attn:  Mr. Eric Stapleton                         (Cont. pages)
ON REVERSE    -------------------------------------------------------------------------------------------------------------
              b. STREET ADDRESS (or PO Box)                                                                 17(I)
                 601 South 12th Street, Mail Stop RT-14A                                     $108,000,000   GRAND
                                                                                                            TOTAL
              -------------------------------------------------------------------------------------------------------------
              c. CITY                           d.        STATE               e.  ZIP CODE
                 Arlington,                               VA                      22202
---------------------------------------------------------------------------------------------------------------------------
22.  UNITED STATES OF                                                         23.    NAME (Typed)
AMERICA BY (Signature)   --->     /s/  Jamie Thompson                                        JAMIE THOMPSON
                                                                              TITLE: CONTRACTING/ORDERING OFFICER
---------------------------------------------------------------------------------------------------------------------------

      OMB Control No. 2120-0595                                                          (OF-347) FAA Template No. 4 (8/97)
</TABLE>

* Confidential treatment requested.
<PAGE>

                                                            HSTS04-04-F-DEP044.1
                                                               Delivery Order #4
                                                      Contract DTSA20-03-C-01900
                                                                     Page 2 of 6

The purpose of this Delivery Order is to order 95 High-Speed Integrated
Explosive Detection Systems (EDS) manufactured by InVision Technologies, Inc. in
accordance with Contract number DTSA20-03-C-01900. Items authorized under this
Delivery Order are prescribed herein.

1.    Section B - Supplies/Services and Price/Cost

The Contractor shall provide the following supplies and services in accordance
with the terms and conditions of this contract. The following line item(s) will
be ordered in accordance with the contract amounts set forth below.

<TABLE>
<CAPTION>
                                                                   UNIT
CLIN              DESCRIPTION                QTY    UNIT           PRICE       TOTAL
------       ----------------------         -----   -----          ------      ------
<S>          <C>                            <C>     <C>            <C>         <C>
0002         High Speed Integrated
             EDS Unit (CTX 9000DSi)
0002AA       High Speed Integrated          [***]   [***]          $[***]      $[***]
             EDS Unit (CTX 9000DSi)
0002AB       High Speed Integrated          [***]   [***]           [***]       [***]
             EDS Unit (CTX 9000DSi)
0008         [***]
             Incentive
0008AA       [***]                          [***]   [***]          $[***]      $[***]
             Milestone
             [***]
0008AB       [***]                          [***]   [***]          $[***]      $[***]
             Milestone
             [***]
0008AC       [***]                          [***]   [***]          $[***]      $[***]
             Milestone
             [***]
</TABLE>

2.    Funding:   Funding in the amount of $108,000,000.00 is hereby authorized
                 under this Delivery Order.

3.    Section C - Description/SPECS/Work Statement

The Contractor shall deliver the supplies and services associated with the above
CLINs in accordance with the Statement of Work in Contract DTSA20-03-C-01900.

* Confidential treatment requested.
<PAGE>

                                                            HSTS04-04-F-DEP044.1
                                                               Delivery Order #4
                                                      Contract DTSA20-03-C-01900
                                                                     Page 3 of 6

4.    Section F - Deliveries or Performance

            a.    The CLINS are to be delivered to the following locations:

<TABLE>
<CAPTION>
                                                                     PLACE OF      PLACE OF
CLIN            SUPPLY/SERVICE          QTY    DATE OF DELIVERY      DELIVERY      ACCEPTANCE
---------------------------------------------------------------------------------------------
<S>            <C>                     <C>     <C>                   <C>           <C>
0002AA         High Speed Integrated   [***]        [***]             [***]        FOB ORIGIN
               EDS Unit (CTX 9000DSi)
0002AA         High Speed Integrated   [***]        [***]             [***]        FOB ORIGIN
               EDS Unit (CTX 9000DSi)
0002AA         High Speed Integrated   [***]        [***]             [***]        FOB ORIGIN
               EDS Unit (CTX 9000DSi)
0002AB         High Speed Integrated   [***]        [***]             [***]        FOB ORIGIN
               EDS Unit (CTX 9000DSi)
0002AA         High Speed Integrated   [***]        [***]             [***]        FOB ORIGIN
               EDS Unit (CTX 9000DSi)
0002AB         High Speed Integrated   [***]        [***]             [***]        FOB ORIGIN
               EDS Unit (CTX 9000DSi)
0002AA         High Speed Integrated   [***]        [***]             [***]        FOB ORIGIN
               EDS Unit (CTX 9000DSi)
0002AB         High Speed Integrated   [***]        [***]             [***]        FOB ORIGIN
               EDS Unit (CTX 9000DSi)
0002AA         High Speed Integrated   [***]        [***]             [***]        FOB ORIGIN
               EDS Unit (CTX 9000DSi)
0002AA         High Speed Integrated   [***]        [***]             [***]        FOB ORIGIN
               EDS Unit (CTX 9000DSi)
0002AB         High Speed Integrated   [***]        [***]             [***]        FOB ORIGIN
               EDS Unit (CTX 9000DSi)
0002AA         High Speed Integrated   [***]        [***]             [***]        FOB ORIGIN
               EDS Unit (CTX 9000DSi)
0002AA         High Speed Integrated   [***]        [***]             [***]        FOB ORIGIN
               EDS Unit (CTX 9000DSi)
0002AB         High Speed Integrated   [***]        [***]             [***]        FOB ORIGIN
               EDS Unit (CTX 9000DSi)
0002AA         High Speed Integrated   [***]        [***]             [***]        FOB ORIGIN
               EDS Unit (CTX 9000DSi)
0008AA         [***]                   [***]        [***]             [***]        FOB ORIGIN
               Milestone
0008AB         [***]                   [***]        [***]             [***]        FOB ORIGIN
               Milestone
0008AC         [***]                   [***]        [***]             [***]        FOB ORIGIN
               Milestone
</TABLE>

            b.    Period of Delivery: The period of delivery for this order is
                                      from the date of award through March 31,
                                      2005.

* Confidential treatment requested.

<PAGE>

                                                            HSTS04-04-F-DEP044.1
                                                               Delivery Order #4
                                                      Contract DTSA20-03-C-01900
                                                                     Page 4 of 6

5.    Section G - Contract Administration Data

            a.    The following administration data applies to this order:

                  Contracting Officer's           Transportation Security
                  Techinical Representative       Administration
                  (COTR):                         Mr. Domenic Bianchini
                                                  590 Herndon Parkway, Suite 120
                                                  Herndon, VA 20170
                                                  Telephone (703) 796-7107
                                                  Fax (703) 707-5675

                  Contracting Officer:            Transportation Security
                                                  Administration
                                                  Mr. Jamie Thompson
                                                  590 Herndon Parkway, Suite 120
                                                  Herndon, VA 20170
                                                  Telephone (703) 796-7125
                                                  Fax (703) 707-5675

            b.    The Contractor shall submit to the TSA Contracting Officer the
                  serial numbers/ID numbers for each system delivered under this
                  Delivery Order at least one week prior to, but no later than,
                  delivery of the system.

6.    Section H - Special Terms And Conditions

The following terms apply to this Delivery Order, number HSTS04-04-F-DEP044.1
only.

            a.    In the event the Contractor fails to meet the delivery
                  schedule as provided herein, such failure will be considered
                  in accordance with the Termination for Default clause (AMS
                  2.10.6-4 (1996)).

            b.    [***] Incentive (CLIN 0008):

                  (1)   The [***] Incentive will be earned [***] as follows:

                                -     [***]

                                -     [***]

                                -     [***]

* Confidential treatment requested.

<PAGE>

                                                            HSTS04-04-F-DEP044.1
                                                               Delivery Order #4
                                                      Contract DTSA20-03-C-01900
                                                                     Page 5 of 6

                  (2)   [***].

                  (3)   [***].

                  (4)   [***].

            c.    Warranty:

                  (1)   The Contractor's Commercial Warranty of [***] shall
                        apply to all High Speed Integrated EDS CTX 9000DSi
                        machines delivered under this delivery order.

                  (2)   The Contractor's Commercial Warranty for units delivered
                        [***] shall commence upon [***].

                  (3)   The Contractor's Commercial Warranty for units delivered
                        [***] shall commence upon [***].

            d.    Payment Terms:

                  (1)   For CLIN 0002 Production Units:

                        -     35% of the CLIN price at the time of order;

                        -     60% of the CLIN price at satisfactory completion
                              of Factory Acceptance Test. Satisfactory
                              completion includes a signed form FAA-256,
                              Inspection Report of Material and/or Services; and

                        -     5% of the CLIN price at satisfactory completion of
                              Site Acceptance Test, but not later than 45 days
                              after delivery, whichever occurs first.

* Confidential treatment requested.

<PAGE>

                                                            HSTS04-04-F-DEP044.1
                                                               Delivery Order #4
                                                      Contract DTSA20-03-C-01900
                                                                     Page 6 of 6

                  (2)   For CLIN 0008AA, 0008AB and 0008AC [***] Incentives:

                        100% of the CLIN price at [***].

7.    Defense Priority and Allocation Requirement:

The Contractor shall follow all the requirements of the Defense Priorities and
Allocations System regulation (15 Code of Federal Regulations Part 700).

         /s/ David Pillor                                     12 March '04
------------------------------------                    ------------------------
Contractor Signature                                            Date
InVision Technologies

                              END OF DELIVERY ORDER

                              [***]

* Confidential treatment requested.

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