Restaurant cashier totally chill while being robbed with a gun in his face

I have a friend who works counter at convenience stores and he has… issues. Two or three times people have tried to rob him, and each time he went over the counter, pounded their heads into the concrete floor until they stopped moving and screaming, and then he took their guns and called the police. So far every would-be robber has survived having their skull broken.

I convey this information only to provide a fathom, not to condemn or approve.

Also, to show that there’s more than one reason for criminals to be very much on edge during robberies. Some people just can’t be robbed, really, a robber ends up having to murder them in order to escape.