Featured in the film is footage of P-3 Orion search aircraft, DASH drone helicopter, and the ships USS Yorktown (CV-1), destroyers USS Leary (DD-879), USS Walker (DD-517), and USS Bridger (DE-1024) and various submarines including USS Scorpion (SSN-589).
By the way, ASW is hard. You might find Lt. Cmdr. Jeff W. Benson, USN's A New Era in Anti-Submarine Warfare interesting reading:
When comparing the undersea with other warfare area such as anti-air warfare, the science and understanding of the ASW operating environment is a more complex tactical problem. Given the complexity of ASW, training personnel in mastering oceanography and anti-submarine operations must remain a high priority. For the last twenty years or more, ASW has not been a significant operational requirement as a result of the Cold War ending and a decade of fighting in the war on terrorism. A culture change from a primarily air warfare centric navy to an emphasis more in ASW must occur to improve proficiency among naval personnel at all ranks. This culture change must occur from the top down led by the Navy’s senior officers afloat and ashore.