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.