As an increasing number of roadside bombs, suicidal jihadists and cars packed with high explosives kill and maim in Afghanistan and Iraq, it seemed like a good time to take in a feature film that pays well-deserved tribute to the American servicemen in the frontlines of countering such horrors. “The Hurt Locker” is an unflinching and powerful testimonial to those George Orwell thanked with his timeless quote: “Men sleep peacefully in their beds at night because rough men stand ready to do violence on their behalf.”