SAN FRANCISCO, (October 5, 2007) The Coast Guard Cutter George Cobb, homeported in San Pedro, Calif., enters San Francisco Bay during this year's Fleet Week Parade of Ships. Coast Guard active duty, reserve and auxiliary personnel worked with other agencies in enforcing security zones around military vessels as they entered the Bay, and to secure a clear zone on the water during performances by the Navy Blue Angels. (Coast Guard photo by PA1 Alan Haraf)