Air National Guard Staff Sgt. Derrick Donnelly, 116th Air Control Wing, inspects the engine and upper wings of an E-8 Joint STARS that just returned from a night mission at Robins Air Force Base, Ga., Feb. 15, 2012. Donnelly, a crew chief with the 116th, is responsible for ensuring the JSTARS aircraft is safe and mission ready at all times. (U.S. Air Force photo by Master Sgt. Roger Parsons)