were maintained on Guam and Okinawa. PACAF established On 1 July 1954, Pacific Air Force was activated at Hickam Air Force Base, Territory of Hawaii, and assigned to Far East Air Forces (FEAF), which was headquartered in Japan. Pacific Air Force at Hickam functioned primarily as the Air Force staff component and planning element of U.S. Pacific Command. On 1 July 1956, Pacific Air Force was redesignated Pacific Air Force/FEAF (Rear). Headquarters FEAF began preparations to move from Japan to Hawaii. Smith assumed additional responsibilities as deputy commander, Far East Air Forces. This was followed on 1 July 1957 with United States Far East Air Forces being redesignated as Pacific Air Forces (PACAF) and transferring its headquarters to Hickam AFB, Territory of Hawaii. On 1 October 1955, the Far East Air Materiel Command was transferred from Far East Air Forces to Air Force Materiel Command. Tensions between the Communist Chinese on the mainland and the Nationalist Chinese on Taiwan dominated FEAF and PACAF during the mid and late 1950s. The 1954 and 1958 Taiwan Strait Crisis both threatened to break out into a war, and USAF F-104C fighter squadrons were deployed to Kung Kuan Air Base on Taiwan in 1958. The question of "Matsu and Quemoy" became an issue in the 1960 American Presidential election when Richard Nixon accused John F. Kennedy of being unwilling to commit to using nuclear weapons if the People's Republic of China invaded the Nationalist outposts. By 1960, PACAF maintained a combat-ready deterrent force of some 35 squadrons, operating from 10 major bases in a half-dozen countries. Vietnam War In the early 1960s, communist military strength and firepower in Vietnam increased. As a result, PACAF began a buildup in the area with the addition of troops and better arms and equipment. In response to what has become known as the Gulf of Tonkin incident in 1964, Tactical Air Command (TAC) pilots, navigators and support personnel found themselves deployed from the CONUS to PACAF bases such as Da Nang Air Base and Phan Rang AB in South Vietnam. Takhli Royal Thai Air Force Base and Korat Royal Thai Air Force Base in Thailand were also used by deployed TAC fighter squadrons. As the American effort in Southeast Asia increased, TAC permanently reassigned entire wings of aircraft from CONUS bases to PACAF and increased the number of rotated tactical fighter and reconnaissance squadrons on rotating Temporary Duty