8/17/2012 - U.S. Air Force Airman 1st Class Raymond Thompkins, fires a M240 machine gun Aug. 10, 2012, during a heavy weapons qualification course at Camp Bowie, Texas. While at the firing range, Airmen assigned to the 7th Security Forces Squadron shot a M240 machine gun at targets ranging from 25 to 300 meters. The M240 fires 7.62 mm rounds with a maximum range of 3,725 meters. (U.S. Air Force photo by Airman 1st Class Damon Kasberg/Released)

8/17/2012 - U.S. Air Force Senior Airman Alexi Patterson, 7th Security Forces Squadron, prepares ammo for a M249 light machine gun Aug. 10, 2012, during a heavy-weapons qualification course at Camp Bowie, Texas. While at the firing range, Airmen assigned to the 7th Security Forces Squadron shot a M249 light machine gun at targets ranging from 25 to 300 meters. (U.S. Air Force photo by Airman 1st Class Damon Kasberg/Released)

8/17/2012 - U.S. Air Force Airman 1st Class Raymond Thompkins, 7th Security Forces Squadron, prepares ammo for a M240 machine gun Aug. 10, 2012, during a heavy-weapons qualification course at Camp Bowie, Texas. The M240 allows service members to place mass amount of fire on an enemy position, suppressing their movement. (U.S. Air Force photo by Airman 1st Class Damon Kasberg/Released)

8/17/2012 - U.S. Air Force Senior Airman David O’Brien, 7th Security Forces Squadron, overlooks an Airman while he fires a M240 machine gun Aug. 10, 2012, during a heavy-weapons qualification course at Camp Bowie, Texas. Prior to firing at the range, Airmen participate in a four-day classroom course, where they learn how to clean, disassemble, reassemble, operate, perform immediate actions and about different types of loads for the weapon. (U.S. Air Force photo by Airman 1st Class Damon Kasberg/Released)

8/17/2012 - U.S. Air Force Senior Airman Matthew Smith, right, instructs Senior Airman Alexi Patterson, on firing a M249 light machine gun Aug. 10, 2012, during a heavy-weapons qualification course at Camp Bowie, Texas. Prior to firing at the range, the 7th Security Forces Squadron Airmen participate in a four-day classroom course, where they learn how to clean, disassemble, reassemble, operate, perform immediate actions and about different types of loads for the weapon. (U.S. Air Force photo by Airman 1st Class Damon Kasberg/Released)

8/17/2012 - U.S. Air Force Airman 1st Class Jazmyn Muse, changes the barrel of a M240 machine gun Aug. 10, 2012, during a heavy-weapons qualification course at Camp Bowie, Texas. While at the firing range, Airmen assigned to the 7th Security Forces Squadron shot a M240 machine gun at targets ranging from 25 to 300 meters. The M249 is belt-fed and gas operated. It has a quick-change barrel, allowing the gunner to rapidly replace an overheated or jammed barrel. (U.S. Air Force photo by Airman 1st Class Damon Kasberg/Released)

8/17/2012 - U.S. Air Force Senior Airman Alexi Patterson, feeds 5.56 mm rounds into a M249 light machine gun Aug. 10, 2012, during a heavy-weapons qualification course at Camp Bowie, Texas. While at the firing range, Airmen assigned to the 7th Security Forces Squadron shot a M249 light machine gun at targets ranging from 25 to 300 meters. The M249 provides infantry squads with the heavy volume of fire of a machine gun, combined with the accuracy and portability near that of a rifle. (U.S. Air Force photo by Airman 1st Class Damon Kasberg/Released)

8/17/2012 - U.S. Air Force Senior Airman Nicholas Navarro, 7th Security Force Squadron, fires a M249 light machine gun Aug. 10, 2012, during a heavy-weapons qualification course at Camp Bowie, Texas. While at the firing range, Airmen shot a M249 light machine gun at targets ranging from 25 to 300 meters. The M249 allows service members to place mass amount of fire on an enemy position, suppressing their movement. Prior to firing at the range, Airmen participate in a four-day classroom course, where they learn how to clean, disassemble, reassemble, operate, perform immediate actions and about different types of loads for the weapon. (U.S. Air Force photo by Airman 1st Class Damon Kasberg/Released)