The Guardian

Coast Guard Rescue Swimmer Ben Randall (Kevin Costner) is the only survivor after his helicopter is forced down and crashes into the water during a rescue mission at sea. Ben is coping with the loss of his entire crew when he is assigned to teach at the Coast Guard Rescue Swimmers School. He doesn't want any other men to die during a rescue, so he uses his own training methods that put the new recruits through the toughest test they will ever encounter during a mission. Jake Fisher (Ashton Kutcher) is one of his raw recruits and Ben takes him under his wing.