Coast Guard Cutter Duane Called To Action

The video tutorial describes a military operation involving the deployment of depth charges to neutralize a submarine. The action begins with the initiation of the sequence, followed by the deployment of three depth charges. The submarine is then neutralized through gunfire, crippling its tower. Finally, the operation concludes with the rescue of survivors as another U-boat is destroyed.

Who are picked up after the action?

What is the fate of the U-boat mentioned?