In my case, I'm afraid it's all academic - I would have been firing as soon as my muzzle cleared the counter.
This clerk has BIG brass ones, and a cool head.
He was interviewed and asked why he didn’t shoot the robber. He answered, he wasn’t able to point the gun at me if he had I’d have shot him........interesting because he didn’t give the guy a chance to point the gun at him, he pushed that hand back while he had his gun out and ready...interesting video....