Lone Survivor (R)

The outcome of “Lone Survivor” is never in doubt. Four U.S. Navy Seals drop into a Taliban stronghold targeting a particular leader. They find themselves surrounded by hundreds of well-armed fighters and, as the title suggests, only one man lives to tell the tale.

The film is based on a first-hand account by Marcus Luttrell of a failed mission in Afghanistan, played by a captivating Mark Wahlberg. Director Peter Berg (“Friday Night Lights”) reportedly kept the author and veteran handy during production.

Too often, expert advice will bog a script down as the person with real life insight begins...