Guy probably went in with a trench coat and sweats underneath, not showing what really there. I think it'd be pretty easy to do, not like he isn't bringing anything in with him that he doesn't have.
I take it that happened during suberbowl today? I not been watching.
That about as good as its going to get.
Leaders get pie in the face and get shot....security of any degree is the hardest thing if someone decides to breach it...though thats not popular in that many are told they are safe and then sleep better....don't get me wrong, its not useless...just difficult to succeed in.
My guess is that this guy would pass just about any security check you could put up. The gun was non metalic No nitrates, and he was stealthy and agile due to the small arms compliment