At midnight on July 30, 1945, the USS Indianapolis was sailing west on the Pacific toward the Philippines with 1,197 men on board when it was hit with two Japanese torpedoes. Within 12 minutes, the ship was at the bottom of the ocean and 900 men were left floating in shark-infested waters. Over the course of the next four days, the sailors struggled through dehydration, starvation, exposure and shark attacks in an astonishing tale of human survival.