Secretary of Defense Chuck Hagel, foreground left, talks with U.S. Air Force Gen. Paul J. Selva, center right, the incoming commander of U.S. Transportation Command, and Selva's wife, Ricki, while awaiting the start of a USTRANSCOM change of command ceremony at Scott Air Force Base, Ill., May 5, 2014. Hagel welcomed Selva to the post during the ceremony and presided over retirement proceedings for Gen. William M. Fraser III, the outgoing USTRANSCOM commander, who retired after 40 years of service.