Hearings on National Defense Authorization Act for fiscal years 1992 and 1993--H.R. 2100 and oversight of previously authorized programs before the Committee on Armed Services, House of Representatives, One Hundred Second Congress, first session : Procurement and Military Nuclear Systems Subcommittee hearings on procurement of aircraft, missiles, weapons and tracked combat vehicles, ammunition, and other procurement : hearings held March 21, April 10, 11, and 17, 1991