Besides the things everyone else mentioned, this part bothered me as well...

"Neither of the teens had a weapon"

I'm not familiar with the laws in that state, but sometimes you just have to use a little common sense too. I obviously wasn't there and don't know everything that went on, but I don't think I would have even fired a shot. I would guess that once I announced or showed them that I was armed they probably would have turned and left.

The guy definitely has some sort of mental issue.