Air Force Chief of Staff Gen. Norton A. Schwartz presents the certificate of retirement to Air Force Gen. Kevin P. Chilton, outgoing commander, U.S. Strategic Command, on Offutt Air Force Base, Neb., Jan. 28, 2011. Air Force Chief of Staff Gen. Norton A. Schwartz presents the certificate of retirement to Air Force Gen. Kevin P. Chilton, outgoing commander, U.S. Strategic Command, on Offutt Air Force Base, Neb., Jan. 28, 2011. SHARE: Download: Full Size (1.67 MB) Tags: Photo Essays Credit: VIRIN: 269528-E-XYH58-817.jpg Photo Gallery