RETIREMENT CERTIFICATE Air Force Chief of Staff Gen. Norton 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 IMAGE: Download Image: Full Size (0.06 MB) Photo By: VIRIN: 415902-P-EIF46-179.jpg Photo Gallery