None of those killed were armed, I'm sure. Yes, 1 person w/ a CCW could have saved many, many lives here.
I'm very suprised that he did all of this with pistols. Something tells me that he's probably got some kind of formal training - very tragic.
The Left is going to go nuts with this, I'm sure. I hope that they're able to realize that a sick and twisted individual did all of this, not a gun. In fact, had he been armed with something more substantial, it could have been much worse.