I think Adams' work is probably a better guide... (My previous reference)
I think this is the reference, and from what I've seen, it isn't an actual FEMA manual.
http://www.amazon.com/Officers-Guide.../dp/0912212268
Not that FEMA doesn't have a plan, though knowing them it involves a ARP 2500 synthethizer and making sure to keep all those uppity civilians in line...
-MJ