------------------------ ---------------- --------------- ---------------------- ------------------- -------------------
  **OMB Approval No.                                                                                   
  2700-0042**                                                                                          

  **AMENDMENT OF                                             1. CONTRACT ID CODE\  PAGE OF PAGES\      
  SOLICITATION/\                                                    NAS9-98100     1 \| 4              
  MODIFICATION OF                                                                                      
  CONTRACT**                                                                                           

   2.                                        3. EFFECTIVE    4.                     5. PROJECT NO.*(if 
  AMENDMENT/MODIFICATION                    DATE            REQUISITION/PURCHASE   applicable)*        
  NO.                                                       REQ. NO.                                   

   Modification 398                          See Block 16C   02284TA1-G                                

   6. ISSUED BY            CODE                              7. ADMINISTERED BY    CODE                 
                                                            *(if other than item                       
                                                            6)*                                        

  NASA Lyndon B. Johnson                                                                               
  Space Center\                                                                                        
  Attn: Lawrence A.                                                                                    
  Kenyon, PCO, Mail Code                                                                               
  BN\                                                                                                  
  2101 Nasa Road One\                                                                                  
  Houston, Texas 77058                                                                                 

   8. NAME AND ADDRESS OF                                                                              
  CONTRACTOR *(No.,                                                                                    
  Street, County, State,                                                                               
  and ZIP Code)*                                                                                       

  Lockheed Martin Space                                                                                
  Operations Company\                                                                                  
  Attn: Timothy Collins,                                                                               
  Manager of Contracts\                                                                                
  595 Gemini Avenue\                                                                                   
  Houston, Texas 77058                                                                                 

    CODE                                                     FACILITY CODE                             

  \(X\)                     9A. AMENDMENT                    9B. DATED *(SEE ITEM                      
                           OF SOLICITATION                  11)*                                       
                           NO.                                                                         

   \                        \                                \                                         
                                                                                                       

                            10A.                             10B. DATED *(SEE ITEM                     
                           MODIFICATION OF                  13)*                                       
                           CONTRACT/ORDER                                                              
                           NO.                                                                         

  X                           NAS9-98100                       10/1/98                                 

  11\. THIS ITEM ONLY                                                                                  
  APPLIES TO AMENDMENTS OF                                                                             
  SOLICITATIONS                                                                                        

    The above numbered                                                                                 
  solicitation is amended                                                                              
  as set forth in Item 14.                                                                             
  The hour and date                                                                                    
  specified for receipt of                                                                             
  Offers  is  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 RECIEVED 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.                                                                                           

   12. ACCOUNTING and                                                                                  
  APPROPRIATION DATA *(if                                                                              
  required)*                                                                                           

   See page 3.                                              Increase:                \$14,262,823.00   

  13\. THIS ITEM APPLIES                                                                               
  ONLY TO MODIFICATION OF                                                                              
  CONTRACTS/ORDERS.\                                                                                   
  IT MODIFIES THE                                                                                      
  CONTRACT/ORDER NO. AS                                                                                
  DESCRIBED IN ITEM 14.(x)                                                                             

   (X)                      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.\                                                                       
                                                                                                       

                            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).\                                                             
                                                                                                       

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

   X                        D. OTHER                                                                   
                           *(Specify type                                                              
                           of modification                                                             
                           and authority)*\                                                            
                            Pursuant to FAR                                                            
                           52.232-22,                                                                  
                           Limitation of                                                               
                           Funds (April                                                                
                           1984)\                                                                      
                                                                                                       

   E. **IMPORTANT:**                                                                                   
  Contractor  is not  is                                                                               
  required to sign this                                                                                
  document and return                                                                                  
  \_\_\_\_\_\_\_\_\_\_                                                                                 
  copies to the issuing                                                                                
  office.                                                                                              

   14. Description of                                                                                  
  amendment/modification                                                                               
  *(Organized by UCF                                                                                   
  section headings,                                                                                    
  including                                                                                            
  solicitation/contract                                                                                
  subject matter where                                                                                 
  feasible.)*                                                                                          

   \                                                                                                   
   \                                                                                                   
   \                                                                                                   
   See page 2.\                                                                                        
   \                                                                                                   
   \                                                                                                   
                                                                                                       

   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.                                                                               

   15A. NAME AND TITLE OF                                    16A. NAME AND TITLE                       
  SIGNER *(Type or print)*                                  OF CONTRACTING OFFICER                     
                                                            *(Type or print)*                          

                                                             Caroline Marrs Root                       

   15B. CONTRACTOR/OFFEROR                   15C. DATE       16B. UNITED STATES OF                      16C. DATE SIGNED
                                            SIGNED          AMERICA                                    

                                                            [BY Original signed by                     [1/9/2003]{.mark}
                                                            Caroline Root]{.mark}                      

  *(Signature of person                                     *(Signature of                              
  authorized to sign)*                                      Contracting Officer)*                      

  NSN 7540-01-152-888070\                   30-105\         STANDARD FORM 30 (Rev.                     
  PREVIOUS EDITION                          JSC SPICE (June 10-83)\                                    
  UNUSABLE\                                 2002)\          Prescribed by GSA\                         
                                                            FAR (48 CFR) 53.243                        
  ------------------------ ---------------- --------------- ---------------------- ------------------- -------------------

I. The purpose of this Modification 398 is to add incremental funding to
this contract. Clause B.2, CONTRACT FUNDING, is deleted in its entirety
and replaced with the following:

B.2 CONTRACT FUNDING (NASA 1852.232-81) (JUN 1990)

\(a\) For the purpose of cost, exclusive of fee, in accordance with the
Limitation of Funds clause, the total amount allotted by the Government
to this contract for all efforts is \$1,568,033,497.72. This allotment
is for all CSOC efforts and covers the following estimated period of
performance October 31, 1998 to January 27, 2003.

\(b\) An additional amount of \$157,639,679.48 is obligated under this
contract for all efforts for payment of fee.

(End of Clause)

Funding Recapitulation:

  ----------------- -------------------- ----------------- --------------------
                    Prior Balance        Modification 398  New Balance

  Cost              \$1,555,067,294.72   \$12,966,203.00   \$1,568,033,497.72

  Fee               \$156,343,059.48     \$1,296,620.00    \$157,639,679.48

  Total             \$1,711,410,354.20   \$14,262,823.00   \$1,725,673,177.20
  ----------------- -------------------- ----------------- --------------------

  ------ ---------------------- ---------------------- ----------------------- ---------------------- ----------------------- ---------------------- ---------------------- ---------------------- --------- ----------------------- --------------------------
         **[Commitments (Amount                                                                                                                                                                                                      
         of PR)]{.underline}**                                                                                                                                                                                                       

                                                                                                                                                                                                                                     

         **[FC]{.underline}**   **[RO]{.underline}**   **[OCC]{.underline}**   **[PO]{.underline}**   **[AIN]{.underline}**   **[MA]{.underline}**   **[PY]{.underline}**   **[FS]{.underline}**             **[PWC]{.underline}**   **[Amount]{.underline}**

                                                                                                                                                                                                                                     

  1\.    5A                     TA                     2540                    TA11                   72                      00                     03                     54                               R33211000               \$114,088.00

                                                                                                                                                                                                             329-96-WT-72            

                                                                                                                                                                                                                                     

  2\.    5A                     TA                     2540                    TA11                   72                      51                     03                     29                               227-72-04-00            \$22,978.00

                                                                                                                                                                                                                                     

  3\.    5A                     TA                     2540                    TA11                   72                      51                     03                     54                               264-51-01-00            \$138,552.00

                                                                                                                                                                                                                                     

  4\.    5A                     TA                     2540                    TA11                   72                      51                     03                     29                               370-30-80-00            \$56,000.00

                                                                                                                                                                                                                                     

  5\.    5A                     TA                     2540                    TA11                   72                      51                     02                     29                               470-01-10-01            \$8,398.00

                                                                                                                                                                                                                                     

  6\.    5A                     TA                     2540                    TA11                   72                      51                     03                     29                               470-02-10-SD            \$500,000.00

                                                                                                                                                                                                                                     

  7\.    5A                     TA                     2540                    TA11                   72                      51                     03                     29                               470-03-10-01            \$900,000.00

                                                                                                                                                                                                                                     

  8\.    5A                     TA                     2540                    TA11                   72                      51                     02                     29                               470-04-10-01            \$70,000.00

                                                                                                                                                                                                                                     

  9\.    5A                     TA                     2540                    TA11                   72                      51                     03                     29                               470-04-10-SD            \$100,000.00

                                                                                                                                                                                                                                     

  10\.   5A                     TA                     2540                    TA11                   72                      51                     03                     29                               470-05-10-01            \$50,000.00

                                                                                                                                                                                                                                     

  11\.   5A                     TA                     2540                    TA11                   72                      51                     02                     29                               470-06-10-01            \$1,315.00

                                                                                                                                                                                                                                     

  12\.   5A                     TA                     2540                    TA11                   72                      51                     03                     29                               470-07-10-01            \$50,000.00

                                                                                                                                                                                                                                     

  13\.   5A                     TA                     2540                    TA11                   72                      51                     03                     29                               470-11-10-01            \$50,000.00

                                                                                                                                                                                                                                     

  14\.   5A                     TA                     2540                    TA11                   72                      51                     03                     29                               470-30-10-SD            \$100,000.00

                                                                                                                                                                                                                                     

  15\.   5A                     TA                     2540                    TA11                   72                      51                     03                     29                               470-90-10-01            \$1,643,743.00

                                                                                                                                                                                                                                     

  16\.   5A                     TA                     2540                    TA11                   72                      51                     03                     29                               470-90-10-SD            \$1,080,513.00

                                                                                                                                                                                                                                     

  17\.   5A                     TA                     2540                    TA11                   72                      51                     03                     29                               470-90-20-SD            \$246,550.00

                                                                                                                                                                                                                                     

  18\.   5A                     TA                     2540                    TA11                   72                      51                     02                     44                               599-92-44-52            \$83,538.00

                                                                                                                                                                                                                                     

  19\.   5A                     TA                     2540                    TA11                   72                      51                     03                     29                               665-14-04-00            \$450,000.00

                                                                                                                                                                                                                                     

  20\.   5A                     TA                     2540                    TA11                   72                      51                     03                     29                               665-15-21-00            \$2,040,000.00

                                                                                                                                                                                                                                     

  21\.   5A                     TA                     2540                    TA11                   72                      51                     03                     29                               667-12-70-SD            \$993,000.00

                                                                                                                                                                                                                                     

  22\.   5A                     TA                     2540                    TA11                   72                      51                     03                     29                               667-33-30-SD            \$200,000.00

                                                                                                                                                                                                                                     

  23\.   5A                     TA                     2540                    TA11                   72                      51                     03                     29                               667-35-01-00            \$2,364,000.00

                                                                                                                                                                                                                                     

  24\.   5A                     TA                     2540                    TA11                   72                      51                     03                     29                               667-35-02-SD            \$840,000.00

                                                                                                                                                                                                                                     

  25\.   5A                     TA                     2540                    TA11                   72                      51                     03                     29                               667-37-10-SD            \$600,000.00

                                                                                                                                                                                                                                     

  26\.   5A                     TA                     2540                    TA11                   72                      51                     03                     29                               667-37-35-01            \$250,000.00

                                                                                                                                                                                                                                     

  27\.   5A                     TA                     2540                    TA11                   72                      51                     03                     29                               667-37-99-01            \$700,000.00

                                                                                                                                                                                                                                     

  28\.   5A                     TA                     2540                    TA11                   72                      51                     03                     29                               667-66-06-SD            \$125,000.00

                                                                                                                                                                                                                                     

  29\.   5A                     TA                     2540                    TA11                   72                      51                     03                     29                               667-66-07-SD            \$250,000.00

                                                                                                                                                                                                                                     

  30\.   5A                     TA                     2540                    TA11                   72                      51                     03                     29                               785-20-44-SD            \$45,000.00

                                                                                                                                                                                                                                     

  31\.   5A                     TA                     2540                    TA11                   72                      51                     02                     29                               785-30-20-SD            \$20,000.00

                                                                                                                                                                                                                                     

  32\.   5A                     TA                     2540                    TA11                   72                      51                     03                     29                               883-01-01-SD            \$170,148.00

                                                                                                                                                                                                                                     

                                                                                                                                                                                                   **Total                           **\$14,262,823.00**
                                                                                                                                                                                                   amount of                         
                                                                                                                                                                                                   PR:**                             
  ------ ---------------------- ---------------------- ----------------------- ---------------------- ----------------------- ---------------------- ---------------------- ---------------------- --------- ----------------------- --------------------------