Students cheer in excitement as Petty Officer 2nd Class Ian Jobs, a Coast Guard Air Station San Francisco rescue swimmer, is lowered into the water off Alameda, Calif., Wednesday, Nov. 7, 2012. The Air Station San Francisco aircrew performed the demonstration for approximately 600 Alameda elementary school students, faculty and volunteers. U.S. Coast Guard photo by Petty Officer 2nd Class Barry Bena.