U.S. Army Spc. William Marsh, a mortarman, covers his ears as Sgt. John Keller, a mortarman, fires a high-explosive mortar shell from an M224 60 mm mortar system while Spc. Jacob Connolly, a fire support specialist, scans the impact area during live-fire training at Forward Operating Base Torkham, Nangarhar province, Afghanistan, Sept. 27, 2013. The Soldiers were assigned to Charlie Company, 2nd Battalion, 30th Infantry Regiment, 4th Brigade Combat Team, 10th Mountain Division.