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