CHANGE OF COMMAND Defense Secretary Robert M. Gates, Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, Air Force Gen. Kevin P. Chilton, commander, U.S. Strategic Command, and Air Force Chief of Staff Gen. Norton A. Schwartz participate in the U.S. Strategic Command change-of-command ceremony on Offutt Air Force Base, Neb., Jan. 28, 2011. Chilton, who was relieved by Gen. C. Robert Kehler, retired after a 34-year career. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 901955-H-KCU25-540.jpg Photo Gallery