For years he's been cast as the inscrutable intellectual in thinky films like "The Daytrippers" and "The Manchurian Candidate." But in "Defiance," Liev Schreiber fires his first machine gun. "Defiance" tells the true story of three Jewish brothers who flee the Nazis to hide out in the Polish forest. Hundreds follow to form a secret community - and most survive the war. Kurt asks Schrieber how he turned into an action hero.