I seriously doubt he was a firearms instructor for the DEA. Just the way he was playing or show boating for the crowd tells me that he was not a firearms instructor.
I watched this video several years ago and couldn't believe it then. His concern after shooting himself was that he'd never be able to show firearms again blows me away.
This guy was an embarrassment to the DEA and to think that he has sued the DEA for someone within the DEA releasing the video. He screws up and shoots himself and the American tax payer foots the bill. Nice.