On the subject of firearms regulations, today's New York Times has an article as to existing federal law which if adequately supported by Virginia STATE law, would have made it impossible for the perpetrator of this week's outrage from legally purchasing a weapon:

US Rules Made Shooter Ineligible

I've known several 'silent loners' in the day. One guy who was a pretty quiet guy even in a crowded room, verbally abusive when approached, a co-worker who described how, after his car was burglarized, he waited on the roof of his trailer home with a weapon the next night in case the thief returned, another who described in detail how much he hated his family (or anyone in his life who got close to him). Have yet to find this kind of thing in a woman.