Security Forces Squadron competes in Global Strike Challenge 2011
U.S. Air Force Airman 1st Class Stephen Boyd, 307th Security Forces Squadron, assembles an M60 machine gun during the Mental and Physical (MAP) competition of Global Strike Challenge, Barksdale Air Force Base, La., Nov. 7, 2011. The Global Strike Challenge is the world's premiere bomber, Intercontinental Ballistic Missile and security forces competition with units from Air Force Global Strike Command, Air Combat Command, Air Force Reserve Command and the Air National Guard. (U.S. Air Force photo by Master Sgt. Greg Steele/Released)