This typewritten page from a U.S. Air Force weapons delivery manual, dated 15 July 1971, provides ballistic release data for the BLU-52/B chemical (CS riot-control agent) bomb. Such tables were used by aircrews, including F-4 Phantom crews operating from bases like Da Nang Air Base in South Vietnam, to calculate the correct dive angle, release altitude, and sighting settings needed to deliver ordnance accurately. Documents like this illustrate the technical precision required of Vietnam-era combat aviators. Project: 218451