You just never know...

Most likely an anger management problem; reminds me of Dale Brown, a guy I knew throughout the early schooling days, and when I was a freshmen he showed me some blood on his shoe and told me he got into a fight on Green Mountain, but the next he was arrested by the sheriff for murdering an old lady. Yea she came home and found him stealing the color TV, so he went ape and tore the fridge handle off and smashed her head into nothing.
 
I was in Hawaii a few years back and there was the guy who shot up a bunch of people there, and he used to come on our Army base to fix our copy machines, the Army had some contract with civlians to fix our machines... I seen him a few times in our battalion area, he was very quiet, and never said much.