Secretary of the Navy Ray Mabus signs a poster at a ceremony celebrating the naming of the Virginia-class attack submarine, USS South Dakota (SSN 790), at the battleship USS South Dakota Memorial in Sioux Falls, S.D. Mabus thanked the people of Sioux Falls for their support and contributions to the Navy and discussed the special bond that exists between a state and its namesake vessel. (U.S. Navy photo by Chief Mass Communication Specialist Sam Shavers/Released)