One of my brothers and I , both of us just home from Vietnam (we were in the USMC together) were working the graveyard shift at a gas station, brother is pumping the premium gas into this gents car, when he pulls out a revolver and demands the cash register contents, brother turned the gas hose on him, he got mad said he was going to shoot us both, then saw we were both holding Zippo's with the tops open, ready to light, and we told him go ahead, if the muzzle flash from that revolver doesn't fry you , one of us will.
He stayed right there until the local law arrived and arrested him, he tried to tell them we assaulted him! Too bad he had a couple of priors for armed robbery of gas stations.