Today marks the 68th birthday of the Air Force! The Air Force was initially part of the United States Army, but was formed as a separate branch of the military on 18 September 1947 under the National Security Act of 1947.
This week in photos:
1. Airman Jeffery Gibson, a 354th Security Forces Squadron response force member, fires a Mark-19 grenade launcher Sept. 9, 2015, at Eielson Air Force Base, Alaska. Members of the squadron must show proficiency annually to be qualified on the weapon. (U.S. Air Force photo/Staff Sgt. Shawn Nickel)