U.S. Marines assigned to Charley Company, 1st Battalion, 7th Marine Regiment (1/7), 1st Marine Division, rehearse tactically exiting an MV-22 Osprey tiltrotor aircraft with Marine Medium Tiltrotor Squadron (VMM) 166, Marine Aircraft Group 16, 3rd Marine Aircraft Wing, during Desert Scimitar 2015 (DS15) on Marine Corps Air Ground Combat Center Twentynine Palms, Calif., April 11, 2015. Charley 1/7 and VMM-166 conducted a long-range raid as part of DS15, a combined arms exercise that allows units to maintain readiness and meet current and future real-world demands. (U.S. Marine Corps photo by Cpl. Darien J. Bjorndal, 3rd Marine Aircraft Wing/ Released)