The Coast Guard Cutter Aspen, a 225-foot seagoing buoy tender home-ported in San Francisco, maintains the edge of the race area for the America’s Cup finals in San Francisco Bay as Oracle Team USA makes a turn toward the finish line Sept. 7. The America’s Cup finals are a best of nine series taking place inshore for the first time in the cup's history. (U.S. Coast Guard photo by Chief Petty Officer Mike Lutz)