Service members salute as civilian attendants hold their hands over their hearts during the playing of the National Anthem for the 633rd Air Base Wing change of command ceremony at Langley Air Force Base, Va., April 22, 2013. U.S. Air Force Col. John J. Allen succeeds Col. Korvin Auch as commander of the wing. (U.S. Air Force photo by Airman 1st Class Kimberly Nagle/Released)