"We're walking down Sheridan, 'bang, bang,' hear gunshots go off. He ran up on somebody with an assault rifle, like he was just gonna tackle dude to the ground. He came at the dude, dude rolled on the ground, and had a perfect vantage point to just put one in him, and he did. If those three hadn't run up on that dude, he would have opened fire into the crowd. Who knows what he would have done. He already killed someone."