obsessed with his mission, drew hogan once against dr. the hunt. he worked with brady, his colleague from homeland security investigations back in the state. together, they tracked phones of l chapel's closest assistance, knowing they would most likely be with him and plotting locations on google maps. >> we have seen him come down out to a remote location, and we were trying to pinpoint it. after hours of searching, and after hours of searching, we found it. >> el chapo was camped out at a place known for duck hunting. >> he would come down, me with his most trusted lieutenants for his sons just for a few hours, and that he would head back to the city. once we had the location, i nicknamed it duck dynasty. >> drew now new he was traveling outside of his fortress city of culiacan. this was the best shot they may ever have. he and his partners pushed their superiors, and a decision was made. they would grab el chapo at duck dynasty. >> now you got him in your site . i'm assuming this is not an operation you can pull off by yourselves. >> n