Fifth Missile, The (1986) TV Movie

The crew of a Polaris submarine, on a training mission simulating an attack on Russia, is stricken by toxic poisoning. One of the poison's effects is to make its victims hallucinate, and the sub's captain imagines that he has been given an order to actually attack Russia.

The Fifth Missile (1986) TV Movie
Cast: David Soul, Richard Roundtree, Robert Conrad, Sam Waterston, Yvette Mimieux