in an air defense mission, being replaced by F-102 Delta Dagger interceptors in 1960. The 510th Tactical Fighter Squadron inherited the F-100D Super Sabres of the inactivated 72d TFS in a defensive fighter-bomber mission. It began a series of rotational deployments to Chai-Yi Air Base, Taiwan in July 1959 to defend Taiwan as part of an ongoing USAF defense mission after the 1958 Taiwan Strait Crisis. In 1964 the 510th was reassigned back to the United States at England Air Force Base, Louisiana. It was replaced by the 90th Tactical Fighter Squadron, which was attached to the 401st by the TAC 834th Air Division at England in November 1965 for a 6-month TDY and returned to England in May 1966. Vietnam War Beginning in 1962, the 510th Tactical Fighter Squadron began deployments to Takhli Royal Thai Air Force Base, Thailand, providing air defense training for Royal Thai Air Force personnel, as well as to try to restrain the Communist Pathet Lao which were busily overrunning most of northwestern Laos. From mid-1962 until the end of the conflict in Southeast Asia, the wing frequently deployed assigned and attached components to bases in Southeast Asia for air defense and combat operations under operational control of other organizations. When not so involved, components trained in air defense and other tactical exercises in Taiwan and the Philippines. B-57B light bombers In April 1964, the situation in Indochina led to orders for the PACAF 41st Air Division B-57B Canberra 8th and 13th Bombardment Squadrons to be reassigned from rotational nuclear "quick strike" alert in South Korea to Thirteenth Air Force at Clark AB for possible tactical bombardment missions against communist aggressor forces in South Vietnam. On 9 April 1965, the first Canberras of the 13th Bomb Squadron began arriving at Clark; the 8th began arriving on 17 April. By the end of the month all 47 of the former 3d Bomb Wing's aircraft arrived in the Philippines. The squadrons were formally assigned to Headquarters 13th Air Force, however they were attached to the 405th Wing for administrative and logistical support. During the summer of 1964, a war of nerves was taking place between the United States, North and South Vietnam. United States ground forces were present in South Vietnam, officially in an advisory role to the Army of the Republic of Vietnam (ARVN) at the invitation of the South Vietnamese government. United States forces could