SAN FRANCISCO - Crewmembers stationed aboard the Coast Guard Cutter Aspen, a 225-foot buoy tender homeported at Yerba Buena Island in San Francisco, work on the recovered buoy that marked the safe-water entrance of San Francisco Bay Sept. 26, 2011. The buoy sank Sept. 24, 2011, and had to have three holes cut into the side to drain the water. U.S. Coast Guard photo by Ensign Anna Mueller.