At Pearl Harbor, the Navy's Submarine school teaches underwater escape techniques with dramatic realism. Trainees must leave a flooded compartment in a sub 50 feet below surface. Establishing shot - Military tower, American Flag blowing in the wind. MS - Military gate 'Escape Training Tank'. CUS - Naval men in their bathing suits. CUS - Men sitting in a chamber of some sort. MCUS - Men are coming out of the compartment and floating up to the surface. MS - A submarine surfaced in the harbor. CUS - The submarine is crash diving. CUS - Sailor in a flooded compartment with an open hatch, from the open hatch a sailor comes floating out of it. CUS - Naval man floating up from an open hatch with just a life preserver around his neck. MS - Naval man floating in the ocean with just a life preserver around his neck. MS - Another naval man pops up in the ocean from the flooded chamber below.