Shooter - I agree this shooter hasent demonstrated a high skill level in marksmanship. Why not in concelment & planning? As far as we know, according to news reports (LOL!), they have no description, or any indication as to how may of them there are.
The news today said in the phone "communication" he asked for money, so it may just be a murderer trying to shake down the govt for $$$, but I'll still wager you a box of Lake City the shooter is Islamic and part of a team.
Islamic terrorist sniper team ping.
I forgot to add my part. He's an American with no foreign ties and he doing it alone. No driver, one vehicle.