There is no rule written in stone that says a predator must attack at a specific place, at a specific time, in a specific manner. So why should we limit gun permits to only permit holder's resident state. There could be an attack any where, so they should be able to take their gun into other states as long as the state allows it. If we cut down with gun control measures that is the equivalent of saying indirectly to the attacker, "I don't think your coming, so I will leave my weapon behind." This would indicate to the attacker that you are defenseless and are easy prey, which suggests that they should attack. Don't get me wrong, I'm for strengthening gun regulations to protect the public, but if you don't have weapon and you get attacked somewhere, which has been happening a lot because of spikes in terrorist activity all over the world, then you will be killed and when you die you don't come back. A little philosophy observation to take note of if you observe dinosaurs, over time the prey evolved more and more defenses, which an intelligent predator like raptors or T. Rex, as C.T. scans of its skull show, would remember carefully reconsider attacking because a predator is more worried about hurting themselves, than catching their prey. This means the tougher you are in appearance and in reality the less likely you are to be attacked.