A U.S. Marine Corps MV-22 Osprey tiltrotor aircraft assigned to Marine Medium Tiltrotor Squadron (VMM) 166, Marine Aircraft Group 16, 3rd Marine Aircraft Wing, departs Desert Scimitar 2015 (DS15), flying above Las Vegas, Nevada, April 11, 2015. DS15 is 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)