This 1971 page from a U.S. Air Force weapons delivery manual continues ballistic data for the CBU-24B/B and CBU-49B/B cluster bomb units at 450 knots airspeed, and includes specific Weapons Release Computer System (WRCS) laydown-delivery parameters. Such precise technical data enabled F-4 Phantom crews flying from Da Nang Air Base to accurately deliver area-effect ordnance during the Vietnam War using the aircraft's onboard computing bombsight. Project: 218451