Defense Secretary Robert M. Gates receives a tour the commissioning ceremony for the Virginia-class attack submarine USS Missouri at Naval Submarine Base New London, in Groton, Conn., July 31, 2010. Defense Secretary Robert M. Gates receives a tour the commissioning ceremony for the Virginia-class attack submarine USS Missouri at Naval Submarine Base New London, in Groton, Conn., July 31, 2010. SHARE: Download: Full Size (4.62 MB) Tags: photo essays Credit: VIRIN: 348600-K-YRM82-642.jpg Photo Gallery