Ammunition sits on a concrete berm before paratroopers assigned to Apache Troop, 1st Squadron (Airborne), 40th Cavalry Regiment, 4th Brigade Combat Team (Airborne), 25th Infantry Division, U.S. Army Alaska, conduct an M2 .50 Caliber, Heavy Barrel, Flexible, Machine Gun range on Joint Base Elmendorf-Richardson, Alaska, Tuesday, April 26, 2016. The M2 is a heavy machine gun that was designed in 1918, has been in service since 1933, is manufactured for use by the United States and its allies and is commonly referred to as the "Ma Deuce." The M2 has been in production longer than any other machine gun. (U.S. Air Force photo/Justin Connaher). Original public domain image from Flickr