Not a fan of war movies or cold war submarine movies, BUT went to see this because Ed Harris and Lance Henriksen were in it. To my complete surprise it drew me in and would not let me go. They obviously used an authentic submarine and the claustrophobic, this sub is going to just implode any minute feel, had me on edge. The cast included David Duchovny, William Fichtner, Sean Patrick Flannery, Johnathan Schaech, etc.. Did it have ' "action" - yes, but the meat of the movie was the interaction of the characters, the terror of the time - nuclear annihilation, personal guilt, love, friendship, bravery, and hatred and fear that breeds radical actions. You will regret not seeing this movie!