U.S. Marine Corps Cpl. Robert Dyke fires an M2 .50-caliber machine gun during the crew served weapons firing exercise on a range at the Pohakuloa Training Area in Hawaii April 10, 2010.
Dyke is assigned to the Bravo Battery, 1st Battalion, 12th Marine Regiment. (DoD photo by Lance Cpl. Orlando Perez, U.S. Marine Corps). Original public domain image from Flickr