A U.S. Air Force MQ-9 Reaper remotely piloted aircraft or RPA, taxis down the flightline during a training mission at Creech Air Force Base, Nev., Sept., 26, 2012. An MQ-9’s primary missions are close air support, air interdiction, and intelligence, surveillance and reconnaissance. (U.S. Air Force photo by 432d Wing/432d Air Expeditionary Wing Public Affairs)