Staff Sgt. John Bellardino (right), and Senior Airman David Ching, 28th Aircraft Maintenance Squadron aircraft systems specialists, inspect parts removed from a B-1B at Ellsworth Air Force Base, S.D., March 8, 2012. Aircraft systems specialists diagnose fuel system and component malfunctions, recommend corrective actions, and resolve functional problems. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)