TAKING COMMAND Defense Secretary Robert M. Gates and U.S. Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, listen as U.S. Air Force Gen. Duncan J. McNabb addresses the audience at the assumption ceremony for McNabb as commander, U.S. Transportation Command, Scott Air Force Base, Ill., Sept. 5, 2008. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 698155-X-WFY43-535.jpg Photo Gallery