one of the two men routh is accused of shooting down is chris kriel, possibly one of the best u.s.ers ever. remarkably he made one of those shots from 2,100 yards away. here is how he described the moment. quote, maybe the way i jerked the trigger to the right, adjusted for the wind. maybe gravity shifted and put that bullet right where it had to be. he was so feared by iraqi insurgents they put a bounty on his head. he survived the war, left the navy with a chestful of medal thes. back home he was helping veterans struggling with ptsz. officials think that's what he was doing at that gun range where he died. ed lavendera reports. >> reporter: chris felt passionate about the issue. >> he was very concerned that service members felt discarded when they returned home. and he wanted to facilitate, help facilitate their transition from war to productive civilian life. >> reporter: family of a former young marine named eddie ray routh may have reached out to kyle, helping him ask to help routh overcome his personal struggles and chris kyle and chad littlefield were there to lend a hand.