This 1971 checklist page from a U.S. Air Force F-4 Phantom manual details the arming and launch procedures for three air-to-air missiles used during the Vietnam War: the radar-guided AIM-7 Sparrow, the infrared-homing AIM-9B/E Sidewinder, and the AIM-4 Falcon. F-4 Phantom crews relied on these missiles in aerial engagements against North Vietnamese MiG fighters, and precise switchology like this was critical to successfully acquiring, tracking, and firing on an enemy aircraft in the brief window of a dogfight. Project: 218451