The submarine doors slam shut. The klaxon horn sounds, and the skipper gives the order, "Dive! Dive! Dive!" Diesel engines firing, propellers whirling, they descend into the depths, safe from enemy attack. That was submarine life aboard the USS Finback stationed in the South Pacific Ocean during World War II. It was their tenth patrol, and so most of the crew was accustomed to this way of life, but for the five airmen that they had just rescued this way of life would take some getting used to.