Pray and duck
No, because they are mentally unfit to have a gun. It is against the law to let someone mentally ill own or have a gun.
shoot first.
Taking Aim
Actually, it is legal to kill a man when he is pointing a gun at you because it is considered self defense. You may be sued but it is considered legal.
Gun safe, gun lock, lock on the door of the room when the gun is kept.
In general, pointing a gun at someone is only justified when SHOOTING that person would be justified. Trespass does not rise to that level. Pointing a gun at someone without SERIOUS reason is proably going to result in jail.
By pointing the barrel at the bird's head
Adults that are not criminals that are not mentally ill.
If they have been adjudged mentally incompetent, no.
field trial
Pointing at the target.
Pointing a gun at them usually works.