U.S. Marines carry a simulated casualty off an MV-22 Osprey during a tactical recovery of aircraft and personnel exercise at an undisclosed location in Southwest Asia, Dec. 28, 2015. The Marines are assigned to the 1st Battalion, 7th Marine Regiment, Special Purpose Marine Air-Ground Task Force-Crisis Response-Central Command. U.S. Marine Corps photo by Lance Cpl. Clarence Leake