His commander relays the information that the US Navy has been thinking of the same idea and sends the Bluefin and its crew to the Pacific Missile Test Center at Naval Air Station Point Mugu for a short period of training and familiarization.

The crew of Bluefin are impatient with the training course they must take and attempt to speed things up and gather their own equipment through "midnight supply" (theft), but run afoul of the tight security on the base.

The unorthodox procedures used so well in wartime cause tragedy to the couple; Karin loses her job for revealing information and Talbot's haste in launching a missile from his boat's deck results in his serious injury and the death of his friend Quartermaster "Fuss" Payne (Joe Sawyer).

As indicated in the film's opening credits, on location photography on US naval bases, aircraft carriers, surface fleet ships and submarines took place with the "full cooperation" of the US Armed Forces.

After a long and distinguished career in the US Navy as a submarine commander, Rear Admiral Dykers retired from the Office of the Chief of Naval Operations and moved to California in 1949.