Gerard Butler plays an American submarine commander navigating treacherous Russian waters in this diverting action flick, based on the novel Firing Point, by Don Keith and George Wallace. The plot swings from the sub’s crew on a top-secret mission to a quartet of Navy SEALs with whom the sub is set to rendezvous to the Washington brass devising a game plan at the Pentagon, all while a military coup unfolds on Russian soil. Made with the full support of the U.S. Navy, the film is largely uncontroversial, save for a climax that could double as an advertisement for the navy and America itself. Still, director Donovan Marsh is likely to induce more gasps than eye rolls with some enthralling twists and high-octane sequences. With Gary Oldman, Common, and Linda Cardellini.