BADGER: I did what anybody else would do.And I'm just so glad that I had the opportunity to do what I did because after seeing the people killed, you know, right there beside me. If he'd have got another clip in that gun, why, it would have been disastrous. At the time I did not know that he was reloading his gun when he went by right in front of me. But when I responded, why, there was an opportunity there because somebody picked up a folding chair and came down on the back of the gunsman's (sic) head and that gave me the opportunity to grab his arm, you know, come up like this and push him down. I got a choke hold on him. Roger had his knee on the back of his neck. And every time he would move, I would tighten my grip and Roger would push down more on his face. He was laying like this, you know....
AMANPOUR:: You gave the shooter a black eye, didn't you?
BOWMAN: Well, when he hit the pavement, why, we were holding him down and -- and he was -- he was saying, "Ow! Ow! Ow! Ow!" And I -- I -- I, of course, I didn't know Roger before this happened but I said, "Roger, let up a little bit." And Roger says, "I don't care."And --
BOWMAN: --and he -- he put more pressure on him.
AMANPOUR: And you, yourself, were grazed -- grazed by a bullet.
BOWMAN: I heard, you know, the first shot and I looked but then, I could see the people falling, you know, or they -- sitting in chairs but they were just slumping forward.
Then everybody was trying to get out of the way and get to the ground. And I did the same thing. I felt the bullet hit the back of my head. And it was just a stinging, burning sensation. When the shooting stopped, I stood up. And when I stood up I did not know that that was the gunman right in front of me. And it's, you know, it's just instant reaction is what it amounts to.But when I saw the chair hit him, I knew that must be the man.
BOWMAN: And that's when I -- and I had an opportunity and that's what I did what I think anybody under the circumstances would have done the same thing.
AMANPOUR: Just go to my colleague David Muir---- you have people who you want to talk to there. Tell us their stories.
DAVID MUIR, ABC NEWS: Well, Christiane, we hear about these ordinary people doing extraordinary things. The first responders at the scene -- and I wanted to bring in Dr. Bellal Joseph. -- if you could stand. And I'm curious what you've learned as someone who's trained in this by the so-called ordinary people who really did the groundwork for you.
DR. BELLAL JOSEPH: You know, we do this every day. And that morning, you know, when I walked into the emergency room and saw so many people. The same echoes that come from the first responders at the scene was echoed in the hospital. And I can tell you, people were coming in who didn't need to be there. I think that it was a controlled chaos that just became harmony here.
AMANPOUR: I just want to go to Ken Dorushka who was there that day and tell me what happened because you really saved your wife's life and she's sitting right next to you. And certainly, to her, you are a hero.