Airman 1st Class Jeffrey Merrill, 28th Aircraft Maintenance Squadron offensive avionic systems specialist, inspects the central integrated test system controls in a B-1 bomber during routine maintenance at Ellsworth Air Force Base, S.D., June 18, 2013. The CITSC affects the B-1’s navigation, communication, sniper pod, GPS and radar abilities. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)