I am willing to bet that if we had a time machine and went back to the day before the shooting and raised this question Pederson and most (all?) of the police officials would have insisted on a gun free zone. They would have said there is no need for anyone to have a gun on campus because they were there to offer protection. Now after the shooting they all come out and say it's not their job to protect people. Fine. Get rid of gun free zones and let teachers or other adults carry.