If thats the case. I barricade myself in there, if anyone wants to come (thats my friend. It's a kill or be killed situation so I'm not trying to go for hero factor to save the token moron)
If the supplies in those machines and whatever is in the staff fridge can't last past a zombie attack my reasoning is that it truly is the end of the world.
My door policy would be "if you go out you don't come back in" without knowing how you actually become a zombie its far too important to maintain quarantine.
I live on the second floor because of the impending zombie doom.