SAN FRANCISCO - The U.S. Navy's Blue Angels perform aerial maneuvers here above the CGC Cuttyhunk and the CGC George Cobb Oct. 10, 2008, during Fleet Week. The Cuttyhunk, homeported in Port Angeles, Wash., and George Cobb, homeported in San Pedro, Calif., helped enforce safety and security zones in the Bay during the parade of ships and the air show. (U.S. Coast Guard photo by Petty Officer 3rd Class Erik Swanson)