I was in a situation once where a gun was involved. I was 17 at the time working for my uncle who had a home heating service business in Mass. that required us to go into some bad neighborhoods and very dark basements. While we were servicing the boiler in a large apartment building a guy appears out of no where and asks my uncle for a cigarette, my uncle says sure hands him one and then the guy says while showing us a large knife attached to his belt: I think I'll take the whole pack. My uncle then pulls a LARGE hand gun and says do you want me to light that MF for you too? Then guy then left very quickly then for some reason.