Why Wahlberg 'Lost His Cool' on 'Survivor' Set

Mark Wahlberg plays a Navy SEAL on a covert mission to neutralize a high-level al-Qaeda operative in the true tale Lone Survivor, and the star reveals details on the on-set mishap in which a mortar blew up right by his face, saying, "It was the first time I've lost my cool on a movie set." Watch the video...