+1!
And in addition to (or instead of) bunk beds, consider some cots... either GI type, or the somewhat larger and more comfortable type that Cabelas (for example) sells for hunting camps: You can get even more people in, without using all your floor space during normal times.
Emergency Medicine - saving the world from themselves, one at a time. "Thou shalt not be a victim, thou shalt not be a perpetrator, but, above all, thou shalt not be a bystander." I make the ADL soil themselves. And that makes me very happy 
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