[United States General Accounting Office, Ballistic Missile Defense: Records Indicate Deception Program Did Not Affect 1984 Test Results, GAO/NSIAD-94-219 [1]; Secretary of Defense Les Aspin, Press Briefing, September 9, 1993; Senior Defense Official [John Deutch, Under Secretary of Defense for Acquisition and Technology], "DOD Background Briefing," September 9, 1993].