It depends on how fast the fan is spinning. I tend to think that if the fan was on full blast, then your few boxes of ammo are just going to be taken by the guys with the armory full of it...along with your chicken and silver coin. A more oppressive system of the haves vs the have nots would be the result of full fecal to fan impact.
However, chances are those guys with the armory don't know how to make beer. I can provide this service for the small price of protection.... and your silver coin ha ha.
Cody