Vietnam War: An explosion sinks the American aircraft carrier USNS Card while it is docked at Saigon. Two Viet Cong combat swimmers had placed explosi...

Vietnam War: An explosion sinks the American aircraft carrier USNS Card while it is docked at Saigon. Two Viet Cong combat swimmers had placed explosives on the ship's hull. She is raised and returned to service less than seven months later.