The movie is predicated on the failed mission of US troopers amongst Taliban June 28, 2005, mission often known as Operation Purple Wings. 4 Marines who had been a part of SEAL Group 10 had been tasked tough to catch it and kill Taliban chief Ahmed shahd. He killed himself a minimum of 20 US troopers in a confrontation, after a number of weeks. 4 mission is compromised when they’re noticed by an area. The one crew that survived was Marcus Luttrell mission.