Yeah, I heard the same thing, that's probably what I would think too. I also heard the guy was wearing body armor, so not sure if a sidearm would have done much but give away your position..
At least they got the motherfucker in custody. Instances like this make me question my own views on capital punishment, and I'm against it in every single other instance, but this is different. This guy is a domestic terrorist, people in that theater will be fucked up for years and it's as clear as day who the suspect is.