Needs it's own thread. What we know for sure about this guy isn't much at this point, but I will say one thing. Story goes it took about an hour for police to enter the room after the shooting started. That's a whole lot of time for people other than the shooter to scoot. This guy had a friggin arsenal in the room and at his home. Lots and lots of planning went into this. Would not surprise me one bit if he had help, both in setting up and during the shooting.