A U.S. Coast guard helicopter hovers over the Farallon Islands in the Pacific Ocean, 45 miles west of San Francisco, California.br br Rescuers are lowered down to retrieve two stranded sailors, after a strong wave smashed into their boat, sweeping four crew members overboard.br br One of the sailors was killed in the accident.br br The eight-member crew was aboard the 38-foot yacht named "Low Speed Chase" as part of a race around the group of islands when the massive wave struck.br br The U.S. Air National Guard also saved a third crew member in a separate rescue mission.