The U.S. Air Force Honor Guard pass in review for Gen. Norton Schwartz and new Air Force Chief of Staff Gen. Mark A. Welsh III during a ceremony at Joint Base Andrews, Md., Aug. 10, 2012. Schwartz served in the Air Force for 39 years, the last four years as the Air Force’s senior uniformed leader. Prior to becoming the Air Force chief of staff, Welsh commanded U.S. Air Forces in Europe. (U.S. Air Force photo/Master Sgt. Cecilio Ricardo)