The Hunt for Red October
Scene of Battle: Undersea from the USSR to the US Eastern Seaboard.

Behind Enemy Lines: Sean Connery, Scottish as ever, portrays a Soviet submarine captain attempting to defect to the United States. The Soviet's want to blow him up for betraying them and the Americans think he is a rogue agent about to strike. Only Jack Ryan knows the score.

Trivia: Harrison Ford replaced Alec Baldwin as Jack Ryan in the later Tom Clancy adaptation Patriot Games.