Defense Department authorization and oversight : hearings on H.R. 4428, Department of Defense authorization of appropriations for fiscal year 1987, and oversight of previously authorized programs before the Committee on Armed Services, House of Representatives, Ninety-ninth Congress, second session : Title I, Procurement of aircraft, missiles, weapons, and tracked combat vehicles, ammunition, and other procurement, hearings held February 18, 24, 25, 26, 27; March 3, 11, 12, 18, and May 21, 1986.