<table>
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</colgroup>
<tbody>
<tr class="odd">
<td></td>
<td colspan="41">OMB Approval No. 2700-0042</td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="22">amendment of solicitation/</td>
<td colspan="13">1. CONTRACT ID CODE</td>
<td colspan="6">PAGE OF PAGES</td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="22">modification of contract</td>
<td colspan="13">NAS 9-98100</td>
<td colspan="2">1</td>
<td colspan="4">3</td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="12">2. AMENDMENT/MODIFICATION NO.</td>
<td colspan="8">3. EFFECTIVE DATE</td>
<td colspan="11">4. REQUISITION/PURCHASE REQ. NO.</td>
<td colspan="10">5. PROJECT NO. <em>(If applicable)</em></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="12">Contract Action 54 (CCO)</td>
<td colspan="8">2/1/00</td>
<td colspan="11">N/A</td>
<td colspan="10">N/A</td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="9">6. ISSUED BY</td>
<td colspan="3">CODE</td>
<td colspan="8"></td>
<td colspan="12">7. ADMINISTERED BY <em>(If other than Item 6)</em></td>
<td colspan="3">CODE</td>
<td colspan="6"></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="20"><p>NASA LYNDON B. JOHNSON SPACE CENTER</p>
<p>Attn: Lawrence A. Kenyon, PCO, Mail Code: BN</p>
<p>2101 NASA Road One</p>
<p>Houston, TX 77058</p></td>
<td colspan="21"></td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="41">8. NAME AND ADDRESS OF CONTRACTOR <em>(No., street,
county, State, and ZIP Code)</em></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="41"><p>LOCKHEED-MARTIN SPACE OPERATIONS COMPANY</p>
<p>Attn: David F. Bruce, Manager of Contracts</p>
<p>501 Gemini Avenue</p>
<p>Houston, TX 77058</p></td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="6">CODE</td>
<td colspan="14"></td>
<td colspan="8">FACILITY CODE</td>
<td colspan="13"></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="4">(x)</td>
<td colspan="16">9A. AMENDMENT OF SOLICITATION NO.</td>
<td colspan="21">9B. DATED <em>(SEE ITEM 11)</em></td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="4"></td>
<td colspan="16"></td>
<td colspan="21"></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="4"></td>
<td colspan="16">10A. MODIFICATION OF CONTRACT/ORDER NO.</td>
<td colspan="21">10B. DATED <em>(SEE ITEM 13)</em></td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="4">X</td>
<td colspan="16">NAS 9-98100</td>
<td colspan="21">10/01/98</td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="41">11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF
SOLICITATIONS</td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="41"></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td colspan="2"></td>
<td></td>
<td colspan="25">The above numbered solicitation is amended as set forth
in Item 14. The hour and date specified for receipt of Offers</td>
<td colspan="3"></td>
<td colspan="5">is extended,</td>
<td></td>
<td colspan="7">is not extended.</td>
</tr>
<tr class="even">
<td></td>
<td colspan="41">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:</td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="13"></td>
<td colspan="4"></td>
<td colspan="22"></td>
<td colspan="4"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="13">(a) By completing Items 8 and 15, and returning</td>
<td colspan="2"></td>
<td colspan="23">copies of the amendment; (b) By acknowledging receipt
of this amendment on each copy of the offor</td>
<td colspan="5"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="41">submitted; or (c) By separate letter or telegram which
includes a reference to the solicitation and amendment numbers. FAILURE
OF YOUR ACKNOWLEDGEMENT TO</td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="41">BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF
OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION
OF</td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="41">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</td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="41">or letter makes reference to the solicitation and this
amendment, and is received prior to the opening hour and date
specified.</td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="41">12. ACCOUNTING AND APPROPRIATION DATA <em>(If
required)</em></td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="41"></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="41">13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF
CONTRACTS/ORDERS,<br />
IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.(x)</td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="5">(x)</td>
<td colspan="36">A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify
authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE</td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="5">X</td>
<td colspan="12">CONTRACT ORDER NO. IN ITEM 10A.</td>
<td colspan="24">FAR 52.243-2 Alt. II (Apr 84) Changes &amp; FAR
52.232-22, LOF</td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="5"></td>
<td colspan="36">B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO
REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying
office,</td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="5"></td>
<td colspan="36">appropriation date, etc.) SET FORTH IN ITEM 14,
PURSUANT TO THE AUTHORITY OF FAR 43.103(b).</td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="5"></td>
<td colspan="36">C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT
TO AUTHORITY OF:</td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="5"></td>
<td colspan="36"></td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="5"></td>
<td colspan="36">d. OTHER <em>(Specify type of modification and
authority)</em></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="5"></td>
<td colspan="36"></td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="8"></td>
<td colspan="3"></td>
<td colspan="2"></td>
<td colspan="4"><strong>X</strong></td>
<td colspan="9"></td>
<td colspan="3"></td>
<td colspan="12"></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="7"><strong>E. IMPORTANT:</strong> Contractor</td>
<td colspan="3"></td>
<td colspan="3">is not,</td>
<td colspan="3">X</td>
<td colspan="7">Is required to sign this document and return</td>
<td colspan="2">3</td>
<td colspan="15">copies to the issuing office.</td>
<td colspan="3"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="41"></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="41">14. description of amendment/modification
<em>(Organized by UCF section headings, including solicitation/contract
subject matter where feasible.)</em></td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="41">This Contract Change Order (CCO) 54 is hereby issued to
reflect the transition of effort associated with portions of three Jet
Propulsion Laboratory (JPL) contracts into contract NAS 9-98100
beginning February 1, 2000. This transitioned effort supports the system
administration of the Advanced Multimission Operation System (AMMOS)
under Contract Service Level Agreement B.1.B Solar Exploration Mission
Services CSLA.</td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="41">Except as provided herein, all terms and conditions of
the document referenced in Item 9A or 10A, as heretofore changed,
remains unchanged and in full force and effect.</td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="20">15A. NAME AND TITLE OF SIGNER <em>(Type or
print)</em></td>
<td colspan="21">16A. NAME AND TITLE OF CONTRACTING OFFICER <em>(Type or
print)</em></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="20">Kathy Collins, Sr. Contract Administrator</td>
<td colspan="21">Caroline Marrs Root, Contracting Officer</td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="18">15B. CONTRACTOR/OFFEROR</td>
<td colspan="2">15C. DATE SIGNED</td>
<td colspan="14">16B. UNITED STATES OF AMERICA</td>
<td colspan="7">16C. DATE SIGNED</td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="3"></td>
<td colspan="11">Original signed by: Kathy Collins</td>
<td colspan="4"></td>
<td colspan="2">01-31-00</td>
<td>BY</td>
<td colspan="12"><mark>Original signed by: Caroline Root</mark></td>
<td></td>
<td colspan="8"><mark>2-1-2000</mark></td>
<td></td>
</tr>
<tr class="even">
<td></td>
<td colspan="18"><em>(Signature of person authorized to sign)</em></td>
<td colspan="2"></td>
<td colspan="14"><em>(Signature of Contracting Officer)</em></td>
<td colspan="7"></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="19">NSN 7540-01-152-8070<br />
PREVIOUS EDITION UNUSABLE</td>
<td colspan="5">30-105<br />
JSC MS Word (Aug 95)</td>
<td colspan="17"><strong>STANDARD FORM 30</strong> (Rev. 10-83)<br />
Prescribed by GSA<br />
FAR (48 CFR) 53.243</td>
<td colspan="2"></td>
</tr>
</tbody>
</table>

1.  The effort associated with System Administration support to the
    AMMOS program, under the following JPL contracts, is transitioned
    into NAS 9-98100 on February 1, 2000.

**JPL Contract No. Title Contractor**

960144 Technical Support Effort Personnel (TSEP) NYMA Inc.

> 960145 TSEP UTA
>
> 960100 Information Systems Development Support Infotech

2.  The period of performance authorized for this requirement is through
    April 30, 2000.

3.  Pursuant to NFAR Supplement 1843.7003, the contractor has provided a
    NTE cost amount of \$302,750 for performance through April 30, 2000.
    In addition, a NTE cost amount of \$4,741,917 was established for
    performance through December 31, 2003; and a NTE cost amount of
    \$6,928,583 was established for performance through December
    31, 2008. It is understood that any cost over and above the
    "not-to-exceed" cost shall be non-fee-bearing unless they arise from
    additional NASA requirements in accordance with NASA FAR Supplement
    1843.7003.

4.  The fee amount associated with performance through December 31,
    2003, shall not exceed \$308,225. The fee amount associated with
    performance through December 31, 2008, shall not exceed \$450,358.
    The proposed fee amount shall be consistent with the proposed costs
    and shall be reduced accordingly if the contractor proposes costs
    lower than the NTEs established in this CCO 54.

5.  A credit proposal for the delay in transition of the Maintenance,
    System Administration, and Sustaining Engineering sections under
    B.1.B Solar System Exploration Mission Services CLSA from January 1,
    2000, to February 1, 2000, shall be included in the contractor's
    proposal for the effort associated with this CCO 54. This credit
    proposal shall include both cost and the negotiated fee amount for
    the Maintenance, System Administration, and Sustaining Engineering
    efforts as stated in B.1.B Solar System Exploration Mission Services
    CSLA.

6.  Modified sections to Table B.1.B-3.0-A are represented in underlined
    text as follows.

  -----------------------------------------------------------------------------------------------------------------------
  Table                                                                                             
  B.1.B-3.0-A                                                                                       
  Solar System                                                                                      
  Exploration                                                                                       
  Mission                                                                                           
  Services                                                                                          
  Descriptions                                                                                      
  of Service                                                                                        
  Elements                                                                                          
  -------------- ------ --------------- ------------------------ ----------- ---------- ----------- ---------------------
  New Service    SEID   Service Element Address/Location         Ownership   Security   Operating   Notes
  Element               Description                                          Level      Hours       

  PL010          N/A    DSR IMOC        JPL                      GO          2          24x7        **[New in
                                                                                                    FY03]{.underline}**

  PL020          N/A    AMMOS           [JPL: Bldg 230, third    GO          2          24x7        [New in FY00,
                                        floor, DSOT area and                                        Consolidated into
                                        bldg 264, SOPCs, and                                        PL010 in
                                        contractor                                                  FY03]{.underline}
                                        locations]{.underline}                                      

  SOPC: Space                                                                                       
  Operations                                                                                        
  Planning                                                                                          
  Computer                                                                                          
  -----------------------------------------------------------------------------------------------------------------------