Defenders from the 39th Security Forces Squadron assemble M4 carbine rifles during the classroom portion of a weapons familiarization training June 4, 2015, at Incirlik Air Base, Turkey. All 39th SFS defenders are required to participate in annual training to ensure they stay proficient in marksmanship and qualified to carry weapons while on duty. (U.S. Air Force photo by Senior Airman Krystal Ardrey/Released)