During the Cold War, 13 AF remained in the Philippines, providing air defense of the nation and becoming one of the Numbered Air Forces of Pacific Air Forces (PACAF). During the Korean War, its units provided staging areas for people and equipment destined for the war zone. As the Vietnam War escalated during the late 1960s and early 1970s, 13th AF provided command and control for USAF units stationed in Thailand, its units conducting combat missions throughout Indochina until August 1973. 13 AF units last engaged in combat during the SS Mayaguez Incident in May 1975.