The Top Ten: Past and Present

1. Lockheed Martin Corp.2. Northrop Grumman Corp.3. Computer Sciences Corp.4. Boeing Co.5. Science Applications Intl. Corp.6. General Dynamics Corp.7. Raytheon Co.8. EDS Corp.9. Titan Corp.10. Booz Allen Hamilton Inc. 1. Lockheed Martin Corp.2. Northrop Grumman Corp.3. Science Applications Intl. Corp.4. Boeing Co.5. Computer Sciences Corp.6. Raytheon Co.7. General Dynamics Corp.8. WorldCom Inc.9. EDS Corp.10. BAE Systems N.A. Inc. 1. Lockheed Martin Corp.2. Northrop Grumman Corp.3. Boeing Co.4. Science Applications Intl. Corp.5. General Dynamics Corp.6. Computer Sciences Corp.7. Raytheon Co.8. TRW Inc.9. Booz Allen Hamilton Inc.10. Unisys Corp. 1. Lockheed Martin Corp.2. Northrop Grumman Corp.3. United Space Alliance*4. Computer Sciences Corp.5. Raytheon Co.6. Science Applications Intl. Corp.7. EDS Corp.8. TRW Inc.9. General Dynamics Corp.10. AT&T Corp. 1. Lockheed Martin Corp.2. United Space Alliance*3. Computer Sciences Corp.4. Boeing Co.5. Raytheon Co.6. AT&T Corp.7. General Dynamics Corp.8. TRW Inc.9. Science Applications Intl. Corp.10. Northrop Grumman Corp.*A 50-50 venture between Lockheed Martin and Boeing. Since 2002, revenue from United Space Alliance has been split between the two companies.