BARKSDALE AIR FORCE BASE, La. -- Airman 1st Class Joseph Mcilrath, 7th Security Forces Squadron from Dyess Air Force Base, Texas, fires his weapon during the M4 challenge portion of Global Strike Challenge at Fort Polk, La., Nov. 14. The event is the premier 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/Senior Airman Brittany Y. Bateman)