On this day 58 years ago, on October 11, 1967 (September 8, 1967 lunar calendar), the F-111 fighter-bomber was officially delivered to the US Air Force. On October 11, 1967, the F-111 fighter-bomber produced by General Dynamics and Grumman was officially delivered to the US Air Force. The F-111 fighter-bomber is a twin-engine fighter-bomber, and is the first practical aircraft in the world that can change the wing sweep angle in flight. The F-111 fighter-bomber has the characteristics of long range, large bomb load, and all-celestial attack. F-111 "Aardvark" fighter-bomber