F101 refers to the McDonnell Douglas F-101 Voodoo, a supersonic jet fighter and interceptor used by the United States Air Force during the Cold War. Introduced in the 1950s, it was designed for long-range missions and could reach speeds over Mach 1.5. The F-101 played a crucial role in air defense and reconnaissance, featuring advanced avionics for its time. The aircraft was equipped with a variety of weapons, including air-to-air missiles and cannons. It served in several variants, including the F-101A and F-101B, and was eventually retired in the 1970s, replaced by more advanced aircraft like the F-15 and F-16.