It's not news that security is hard. But asking us to believe that terrorists won't be able to get their hands on any small arm they want, regardless of a ban within the United States? That's insane.
A terrorist armed with a .50-caliber sniper rifle and a scope could plunk away at a nuclear power plant without security personnel knowing what hit them or where the attack was coming from. By the time security officials could adequately respond to the sniper attack, it could be too late.
The only way to prevent this nightmare and other ".50-caliber terror" scenarios is for lawmakers to take action now and restrict these deadly weapons for use by the military and law enforcement officials only.