SHIPBOARD RANGE U.S. Marine Corps Sgt. David Losacano fires an M4 carbine during a live-fire exercise aboard the amphibious dock landing ship USS Fort McHenry in the U.S. 5th Fleet area of operations, Jan. 24, 2015. Losacano is a radio operator assigned to Combat Logistics Battalion 24, 24th Marine Expeditionary Unit. SHARE: Download: Full Size (0.03 MB) Credit: VIRIN: 627931-K-QJT17-821.jpg Photo Gallery