No, DEA Agents aren't, "a bunch of dicks" no more than tkd guys are a bunch of tag playing sissies, lol. We have some good guys out their protecting us believe it or not.
The guy acted stupidly and I'm sure his punishment went well beyond recovering from his injuries.
He was complacent and overlooked the most important gun safety rules.
1. Never point a gun at anything you do not wish to destroy.
2. Treat every firearm as if it were loaded.
3. Do NOT tough the trigger until you are ready to fire.
Here are some more gun safety tips. http://www.nrahq.org/education/guide.asp
I've been around firearms all my life and have seen some pretty dumb things, but this guy should have known better.