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Appendix - Vendor by PSC & Agency Segment              
PSC contractorName  Total  Army  Civ_ Agencies  Def_ Agencies  Navy  USAF
D399 ELECTRONIC DATA SYSTEMS CORPOR  $  2,377,890,982  $    1,445,231  $   151,998,403  $   124,471,002  $2,099,976,346  
D399 SCIENCE APPLICATIONS INTERNATI  $  1,434,324,981  $   14,077,228  $   304,084,456  $1,091,868,273  $      4,274,589  $      20,020,436
D399 NORTHROP GRUMMAN INFORMATION T  $     857,887,841  $   25,875,761  $   278,069,002  $   476,043,396  $      9,564,654  $      68,335,027
D399 INTERNATIONAL BUSINESS MACHINE  $     676,298,060  $   38,902,900  $   576,378,587  $     59,789,208  $      1,037,903  $          189,463
D399 COMPUTER SCIENCES CORPORATION (3126)  $     551,890,446    $   551,890,446      
D399 COMPUTER SCIENCES CORPORATION  $     535,849,132  $   15,283,418  $   122,692,011  $   252,888,277  $     46,896,511  $      98,088,915
D399 UNISYS CORPORATION  $     425,625,740  $   14,393,006  $   269,217,554  $   137,004,467  $         160,638  $        4,850,075
D399 LOCKHEED MARTIN SERVICES INC  $     418,892,955    $   413,951,488  $      3,457,283  $         465,049  $        1,019,135
D399 SYSTEMS RESEARCH AND APPLICATI  $     417,653,841  $    4,640,274  $   362,578,256  $     42,347,601  $      2,555,707  $        5,532,003
D399 LOCKHEED MARTIN INTEGRATED SYS  $     269,765,054  $         59,313  $           (9,315)  $   133,666,481    $     136,048,574
D399 BOOZ ALLEN HAMILTON INC  $     263,897,066  $    9,154,734  $   201,408,550  $     51,827,380  $      1,506,402  
D399 SI INTERNATIONAL, INC  $     216,610,482    $          19,739      $     216,590,743
D399 ITS SERVICES INC  $     209,240,595    $   209,240,595      
D399 OAO CORPORATION  $     201,836,708    $   201,836,708      
D399 RS INFORMATION SYSTEMS INC  $     193,564,664    $   156,260,863      $      37,303,801
D399 Lockheed Martin Information Technology Commercial  $     187,682,109    $   187,682,109      
D399 GENERAL DYNAMICS SYSTEMS DEVELOPMENT AND INTEGRATION SERVICES INCORPORATED  $     153,378,551      $   153,378,551    
D399 SVERDRUP TECHNOLOGY, INC  $     151,476,826  $ 151,476,826        
D399 HARRIS TECHNICAL SERVICES CORP  $     143,997,158    $     37,394,221  $      1,656,545  $          15,680  $     104,930,712
D399 DYNCORP  $     141,998,270  $       741,042  $   141,451,086    $       (583,978)  $          390,120
D399 SRA CORP.  $     140,363,432    $   140,363,432      
D399 GENERAL DYNAMICS GOVERNMENT SY  $     134,464,078      $     28,431,629  $   105,931,719  $          100,730
D399 CSC SYSTEMS & SOLUTIONS LLC  $     126,500,745  $       316,285  $         999,912  $   125,184,548    
D399 QSS GROUP, INC  $     124,695,397  $   65,289,769  $     59,405,628      
D399 ENERGY ENTERPRISE SOLUTIONS LIMITED LIABILITY COMPANY  $     122,977,831    $   122,977,831      
D399 ANTEON CORPORATION  $     106,070,230  $   34,318,598  $     63,087,933  $         (17,295)  $      7,589,765  $        1,091,229
D399 ACCENTURE LLP  $     106,065,365    $     77,983,037      $      28,082,328
D399 ANTEON CORPORATION (VA)  $     102,056,618    $   101,282,199    $         774,419  
D399 BAE SYSTEMS ENTERPRISE SYSTEMS  $      98,172,853      $     98,172,853    
D399 KEANE FEDERAL SYSTEMS INC  $      97,964,758    $     96,698,990  $      1,288,466  $         (22,698)  
D399 BOOZ ALLEN HAMILTON INC.  $      96,356,207  $    4,922,024  $     70,513,703  $     16,343,880  $      3,165,666  $        1,410,934
D399 LOCKHEED MARTIN CORPORATION  $      91,790,740  $   22,200,998  $         (56,785)    $         506,739  $      69,139,788
D399 SCIENCE APPLICATIONS INTERNATIONAL CORPORATION  $      91,676,123  $    4,556,160  $     56,974,615  $      5,339,940  $     14,618,428  $      10,186,980
D399 VERIZON FEDERAL INCORPORATED  $      91,249,183    $     90,594,580  $         597,333  $          57,270  
D399 INTERNATIONAL BUSINESS MACHINES CORPORATION  $      89,150,060  $   25,276,570  $     56,479,168  $      5,416,561  $      1,200,061  $          777,700
D399 CACI INC FEDERAL  $      84,940,959  $    3,083,128  $     32,381,332  $     31,414,662  $     18,061,837  
D399 BEARINGPOINT, LLC  $      83,343,340  $       384,047  $     18,134,526  $     24,084,150  $      6,320,303  $      34,420,314
D399 Northrop Grumman Defense Missi  $      81,191,706    $         349,928  $     52,845,089  $     26,567,439  $        1,429,251
D399 ELECTRONIC DATA SYSTEMS CORPORATION  $      77,077,789    $     68,441,074  $      8,368,832    $          267,883
D399 KPMG CONSULTING  $      75,890,530    $     75,890,530      
D399 CACI, INC - FEDERAL  $      72,915,086  $   71,614,638    $         100,969    $        1,199,479
D399 LOCKHEED MARTIN GOVERNMENT SERVICES INCORPORATED  $      71,099,882  $    3,207,525  $     55,276,606  $       (150,819)    $      12,766,570
D399 RAYTHEON TECHNICAL SERVICES CO  $      70,531,805    $     65,676,192  $      4,466,452  $         389,161  
D399 EER SYSTEMS, INC  $      70,471,036  $       443,360  $     70,027,676      
D399 AMERICAN MANAGEMENT SYSTEMS, I  $      70,332,994    $     69,959,431  $         (81,108)    $          454,671
D399 GENERAL DYNAMICS NETWORK SYSTE  $      68,601,367  $         40,000    $         111,569    $      68,449,798
D399 APPTIS (MCLEAN) INCORPORATED  $      66,123,381      $     66,123,381    
D399 MICROTECH LLC  $      63,838,958  $       502,518  $     63,336,440      
D399 SETA CORPORATION  $      63,195,939    $     20,454,190  $     42,281,370  $         460,379  
D399 STG INCORPORATED  $      62,668,076    $     62,668,076      
D399 BOOZ ALLEN & HAMILTON INC  $      61,668,075  $    8,299,577    $     52,719,011  $         649,487  
D399 MANAGEMENT SYSTEMS DESIGNERS INCORPORATED  $      60,244,761    $     60,244,761      
D399 HARRIS CORPORATION (6860)  $      56,116,760    $     56,116,760      
D399 THE ORKAND CORPORATION  $      55,591,911    $     55,591,911      
D399 ORACLE CORPORATION  $      55,383,708  $   35,200,967  $      9,594,882  $      9,225,607  $         976,893  $          385,358
D399 GENERAL DYNAMICS  $      54,867,817    $     54,867,817      
D399 INFORMATION SYSTEMS SUPPORT INCORPORATED  $      52,563,503    $     52,563,503      
D399 ALPHAINSIGHT CORPORATION  $      52,525,358    $     39,660,547  $     12,864,811    
D399 SAIC  $      51,636,973    $     51,636,973      
D399 LOCKHEED MARTIN INTEGRATED SYSTEMS INCORPORATED  $      51,255,129  $   51,105,841        $          149,288
D399 SCIENCE APPLICATIONS INT. CO.  $      49,365,867    $     49,365,867      
D399 COMPUTER SCIENCES CORP.  $      49,354,882    $     49,354,882      
D399 CHICKASAW NATION INDUSTRIES, I  $      48,342,867    $     48,342,867      
D399 MZM, INC  $      47,747,432      $     47,747,432    
D399 UNISYS CORP.  $      47,391,246    $     47,391,246      
D399 THE TITAN CORPORATION (8754)  $      47,338,282  $   47,338,282        
D399 PEARSON GOVERNMENT SOLUTIONS,  $      46,305,786    $     46,305,786      
D399 ADVANCED SYSTEMS DEVELOPMENT I  $      45,747,541  $   45,747,541        
D399 GETRONICS GOVERNMENT SOLUTIONS  $      45,547,910    $         (37,224)  $     43,789,955  $      1,795,179  
D399 NORTHROP GRUMMAN INFORMATION TECHNOLOGY  $      44,976,188    $     44,976,188      
D399 TRW INC  $      44,306,657    $      5,723,616  $     22,432,753    $      16,150,288
D399 PEROT SYSTEMS GOVERNMENT SERVI  $      44,107,954    $     44,107,954      
D399 TWD & ASSOCIATES INC  $      43,612,699    $     40,006,265  $      3,606,434    
D399 COMPUTER ASSOCIATES INTERNATIO  $      43,293,817  $       439,249  $     18,063,493  $     24,520,267  $         223,172  $            47,636
D399 IBM GLOBAL SERVICES  $      42,911,048    $     42,911,048      
D399 LOG SEC GROUP  $      42,822,118  $   42,822,118        
D399 TKC COMMUNICATIONS LLC  $      42,735,906  $       630,604  $     31,181,158  $     10,924,144    
D399 MANAGEMENT SYSTEMS DESIGNERS, INC  $      42,234,577    $     42,234,577      
D399 ACC NATIONAL LONG DISTANCE CORPORATION  $      41,896,563      $     41,896,563    
D399 CSC INFORMATION SYSTEMS LLC  $      41,499,394    $     38,926,133  $      2,710,867    $         (137,606)
D399 PRAGMATICS, INC  $      41,390,640      $     41,390,640    
D399 NORTHROP GRUMMAN INFORMATION TECHNOLOGY, INC.  $      41,276,156    $     41,276,156      
D399 SI INTERNATIONAL INC  $      41,044,390    $     39,250,000    $      1,794,390  
D399 VGS, INC  $      40,561,249    $     40,561,249      
D399 CACI-CMS INFORMATION SYSTEMS,  $      40,006,463  $         36,245  $     13,560,346  $     23,956,632    $        2,453,240
D399 CREATIVE INFORMATION TECHNOLOG  $      39,697,668    $     39,697,668      
D399 PRAGMATICS INC  $      39,037,571    $     37,731,608  $      1,305,963    
D399 MULTIMAX INC  $      38,543,566    $      3,551,616  $      1,536,500    $      33,455,450
D399 NORTHROP GRUMMAN MISSION SYSTE  $      38,380,587    $     38,380,587      
D399 VERIDIAN INFORMATION SOLUTIONS  $      38,042,938    $     37,843,751      $          199,187
D399 CHEROKEE INFORMATION SERVICES,  $      37,557,625      $     37,557,625    
D399 CACI, INC.- FEDERAL  $      37,552,495  $    1,372,310  $     19,636,173