The Air Force activates the first Boeing LGM-30F Minuteman II ICBM unit, the 447th Strategic Missile Squadron at Grand Forks AFB, N.D.
Happy Birthday US Air Force: 78 Today
Sept. 18, 2025
Seventy-eight years ago today, on Sept. 18, 1947, Supreme Court Chief Justice Fred Vinson swore in Stuart Symington as the first ever Secretary of the Air Force, and the Air Force officially became the first new military service since the Revolutionary War.