Students at the Aviation Rescue Swimmer School spend hours in the pool learning techniques to recover downed flight crew and personnel who may have fallen overboard at sea. The physically demanding course of instruction lasts four weeks. Prior to Rescue Swimmer School, each candidate must successfully complete four weeks at the Navy?s Naval Air Crewman Candidate School after which they are designatred Navy flight crew members. U.S. Navy photo by Chief Photographer?s Mate Chris Desmond.