SAN FRANCISCO -- Coast Guard Cutter Aspen, a 225-foot sea-going buoy tender homeported at Yerba Buena Island, gets underway near the Oakland Bay Bridge Wednesday, Oct. 7, 2009. The Aspen was commissioned in 2002 and its crew is responsible for over 100 navigational aids stretching from the Oregon-California border south to San Diego. (U.S. Coast Guard photo/Petty Officer 3rd Class Levi Read)