A disgruntled ex-CIA operative, his assistant and their assembled group of terrorists seize a battleship with nuclear blackmail in mind. They've planned for every contingency but ignore the ship's cook, former Navy SEAL Casey Ryback—an error that could be fatal.

A passenger train has been hijacked by an electronics expert and turned into an untraceable command center for a weapons satellite. He has planned to blow up Washington DC and only one man can stop him, former Navy SEAL Casey Ryback.