The hero of our little tale didn't have one in the store either because it was against the rules. He was in the rest room got outside, retrieved his gun and came back to rescue his manager who was on the ground covered by a gun. What did you expect the store manager to do, tackle him with his bare hands?
Oh that's right, you expected him to go home.
Good intentions will always be pleaded for any assumption of power. The Constitution was made to guard the people against the dangers of good intentions. There are men in all ages who mean to govern will, but they mean to govern. They promise to be good masters, but they mean to be masters.