Gen. Raymond E. Johns Jr., Air Mobility Command commander, gives his farewell speech during the change of command ceremony at Scott Air Force Base, Ill., Nov. 30, 2012. Johns served 35 years in the Air Force, commanding more than 130,000 Airmen as well as reaching 4,500 flight hours in various aircraft. The incoming AMC commander, Gen. Paul J. Selva, was previously assigned as the assistant to the Chairman of the Joint Chiefs of Staff in Washington D.C. (U.S. Air Force photo/Staff Sgt. Ryan Crane)