On 1 December 1969 was wing redesignated as the 509th Bombardment Wing, Medium and began receiving the FB-111A strategic bomber in December 1970. The FB-111A was the all-weather strategic bombing version of the Tactical Air Command F-111 which was equipped to carry the AGM-69 SRAM that carried a nuclear warhead with an explosive yield of 200 kilotons. The 509th would operate the aircraft for two decades. Won the SAC Bombing and Navigation competition and the Fairchild trophy in 1979, 1981, 1982, and 1983. Awarded the Sanders trophy for best air refueling unit in 1982.