I worked the closing shift, alone, at a Subway when I was 17.
Weird. I did too. Worked in a slum area of suburban Detroit. I was held up at gun point (with a semi-automatic machine gun / Micro Uzi)...had my life threatened for $40.
I said to the guy in my most nonchalant (non-threatening) voice, "I'm just a sandwich artist, man, take the money."
He told me to get in the back room, as he stayed on the costumer side of the counter. As I walked behind the wall, I grabbed one of our big, razor-sharp, cutting knives and hid behind the door to the eating area and waited for him to come through. He never did.
I worked there for another 8 months or so, but got tired of the riff-raff and split. Not before making myself a 6-ft party sub and taking it home as, ya' know, a fringe benefit.
mrC