SAN FRANCISCO (AP) — A Navy hovercraft landed on a San Francisco beach for the first time Wednesday to demonstrate the military's ability to respond to disasters such as a massive earthquake. As spectators lined Ocean Beach to snap photos and watch, the amphibious vehicle hit the shore around 10:15 a.m. to help kick off this year's San Francisco Fleet Week. It left in a cloud of sand and ocean spray about 45 minutes later and returned to its mother ship, the USS Makin Island.