Some states have Reserve Guard as well... that are already tied to Homeland Security.Well,, as senseless as your idea that there are only 1600.
Every Cop, Firefighter Government agency,(Dog catchers, park rangers etc) and State Guards are FEMA. Virtually every Governmental Employee,,as well as the useful idiots that will volunteer. Every Jr,G-man wannabe will want to be an important official and have the power to push folks around.. Just look at TSA. and think infinitely worse.