If an employee refuses to follow the legal rules of his employment, the employer should be free to terminate him. If this 60 year old man decides that he would rather carry a gun on private property than be employed, he has made his decision. Not all decisions are easy or what we want, but life is not fair.
Well clearly you fall very strongly on the side of property rights. I'm not going to spend any more of our time trying to persuade you about the other side of this issue. Have a great weekend.