>> reporter: he realized the gunman was moving around the crowd was firing from another direction, and then silence. as corbin and his friend rushed to the exit, he paused for a moment and turned around. >> as the gunshots were going off, i can hear falling to the ground, some rolling up under the seats and just burning our skin. >> reporter: four rows from the back of the crowded theater, 17-year-old tanner kuhn had a bird's eye view of the madness. >> first shot was fired. i thought it was a firecracker. i eventually realized it was gunshots after another three or four shots. >> reporter: he told his friends, get down. one of them was a 12-year-old. >> he was freaking out. he was really distraught. >> reporter: it was when tanner and his friends crawled for the exit that he felt and saw what he can't get out of his head -- >> i slipped in some blood and landed on a lady, i shook her and told her we need to get out of here, get up, we got to go, there was no response. she did not move. she did not say anything. so, you know, i presumed she was dead.