Dated 15 July 1971, this page catalogs the technical delivery restrictions F-4 Phantom pilots had to observe when dropping low-drag and high-drag bombs and napalm - covering release intervals, rack configurations, arming settings, maximum release airspeed, and minimum spacing between aircraft to avoid fragmentation damage. Rules like these, refined through hard operational experience, protected both aircrew and aircraft during the intense bombing campaigns flown from Da Nang Air Base throughout the Vietnam War. Project: 218454