(Right to left) Secretary of Defense Leon Panetta, Chairman of Joint Chiefs of Staff Gen. Martin Dempsey, former Air Force Chief of Staff Gen. Norton Schwartz, current Air Force Chief of Staff Gen. Mark A. Welsh III and Chief Master Sergeant of the Air Force James Roy arrive during the Air Force Chief of Staff Retirement and Appointment ceremonies 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)