<table>
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<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">5</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 33 (CCO)</td>
<td colspan="8">See Block 16C Below</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">Originally dated: 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">Xx</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">The purpose of this Contract Change Order (CCO) 33 is
to direct/authorize the activities contained in the following pages.
Changes to Contract Service Level Agreements are indicated by barmarks
in the margin and underlined/struckthrough text.</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">David F. Bruce, Contracts Manager</td>
<td colspan="21">Michelle Isermann, 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: David Bruce</td>
<td colspan="4"></td>
<td colspan="2">10/1/99</td>
<td>BY</td>
<td colspan="12"><mark>Original signed by: Michelle Isermann</mark></td>
<td></td>
<td
colspan="8"><mark>10/1/99</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>

I.  The contractor shall reference the Mission Set approved March 3,
    1999, by the Space Operation Control Board, in performance of work
    during FY00.

II. Antenna Engineering for Deep Space Network Core Equipment. The
    contractor is authorized to perform antenna engineering in all
    phases of hardware and software development, testing, implementation
    and installation for core equipment of the DSN.

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A.  The period of performance authorized for this requirement is through
    December 31, 2008.

B.  Pursuant to NFAR Supplement 1843.7003, the contractor has provided a
    NTE cost amount of \$7,904,437 for performance through December
    31, 2003. In addition, a NTE cost amount of \$10,402,423 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. NOTE:
    The government does not concur with the magnitude of the contract
    adjustment represented by the contractor's NTE cost estimate.

C. Change CSLA B.2.A Tracking, Data Acquisition, and Command Data
Services CSLA as follows:

2.9.A Data Service Development

2\. Integration and Installation -- Ongoing development that will remain
with the current development team through completion of the development
phase. CSOC shall assist the DSN development team as required and
perform integration and installation and M&O for the developed system or
facility (e.g., Network Contract Project \[NCP\], Ka-Band Downlink,
etc.)

Table B.2.A-4.0-B Roles and Responsibilities for the DSN

  ----------------------- ----------------------- -----------------------
  **FUNCTION**            **JPL RESPONSIBILITY**  **CSOC RESPONSIBILITY**

  Sustaining and          Develops and sustains   Primarily sustains and
  Development Engineering DSN core equipment. See develops non-core DSN.
                          note 1 Also, *provides  See note 2 Also
                          core interface          *provides engineering
                          documentation and       assistance to JPL for
                          technical engineering   core equipment* *and*
                          assistance to CSOC for  provides access to JPL
                          non-core equipment*     for core equipment.
  ----------------------- ----------------------- -----------------------

**Note 1.** Core equipment/subsystems (hardware and software) is defined
as the following types: antennas mechanical, antenna control, antenna
microwave, transmitters, receivers, frequency and timing, VLBI, radio
science, radio and radar astronomy, Block III Maximum-likelihood
Convolutional Decoder and Galileo telemetry processing. It also includes
all of the equipment at DSS 13 and the equipment that supports the Apple
Valley Radio Telescope. Refer to JPL Document , *TMOD Subsystem,
Configuration Item and Responsibility Definitions* for subsystem
definitions. *Engineering assistance of core equipment includes but is
not limited to the following:*

-   *Requirements generation, design review and assistance, and
    pre-delivery test support*

-   *Performance of tasks with OSE in lead role and acquisition of CDE
    authorization for configuration-controlled equipment changes*

-   *Project engineering and management for large antenna maintenance
    projects*

-   *Failure/problem trend identification and analysis*

-   *Obsolescence reengineering*

-   *Repairable spares requirements identification*

-   *Ensuring that ground system performance is measured and meets
    system requirements*

**Note 2.** Noncore equipment/subsystems (hardware and software)
includes the following: telemetry subsystem, command subsystem,
radiometric subsystem, NOCC real-time subsystem, Network Support
Subsystem, Ground Transmission Communications Subsystem, DSCC
Facilities, DSN cable/rack subsystem, and software production and
control. Refer to JPL Document 820-061*, TMOD Subsystem, Configuration
Item and Responsibility Definitions* for subsystem definitions.

Required Service: Antenna Performance

Expectation

Maintain the antenna performance a specified in DSN/Flight project
Interface Design Handbook, document 810-5,, modules Technical Control
Instrumentation (TCI) 10(70Meter), TCI 20 (26 meter), TCI30 (High
Efficiency and Standard), and TCI 31 (Beam Wave Guide (BWG).

III\. Mission IP Conversion Devices for NISN

IV. A. The period of performance authorized for this requirement is
    through December 31, 2003.

> B. Pursuant to NFAR Supplement 1843.7003, the contractor has provided
> a NTE cost amount of \$3,524,483 for performance through December 31,
> 2003. 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. NOTE: The government does not concur with the magnitude of
> the contract adjustment represented by the contractor's NTE cost
> estimate.

A.  Change CSLA B.2.B., Tracking, Data Acquisition, and Command Data
    Services CSLA as follows:

  -------------------------------------------------------------------------
  NISN                                                  
  Conversion                                            
  Device                                                
  Services                                              
  ------------ -------------------- ------------------- -------------------
  Area         CSOC Responsibility  FTS 2000            Customer
                                    Responsibility      Responsibility

  Portable     Provide agency-wide  N/A                 Order PTP systems
  Telemetry    PTP's for interface                      as required.
  Processors   to legacy mission                        
  (PTP)        control services;                        
  Service      provide standards                        
               and specifications                       
               for network                              
               interface to NISN;                       
               procure, install,                        
               maintain, manage                         
               (including property                      
               management), and                         
               schedule PTP                             
               services and                             
               systems; maintain                        
               and resolve any                          
               conflicts with                           
               service metrics;                         
               provide user                             
               interface and                            
               resolution of                            
               service problems in                      
               conjunction with FTS                     
               2000.                                    

  Small        Provide agency-wide  N/A                 Order SCD systems
  Conversion   SCD's for interface                      as required.
  Device (SCD) to legacy mission                        
  Service      control services;                        
               provide standards                        
               and specifications                       
               for network                              
               interface to NISN;                       
               procure, install,                        
               maintain, manage                         
               (including property                      
               management), and                         
               schedule SCD                             
               services and                             
               systems; maintain                        
               and resolve any                          
               conflicts with                           
               service metrics;                         
               provide user                             
               interface and                            
               resolution of                            
               service problems in                      
               conjunction with FTS                     
               2000.                                    
  -------------------------------------------------------------------------

## 

##  

III\. Landsat 7 Mission Operations Control (MOC)

VI. A. The period of performance for commencement of work cited in CSLA
    B.1.A is hereby changed from 10/1/99 to 11/1/99.

> B. This is an under threshold change (\$100K estimate).