96% was the number I saw. Guard budgets are 96% federal, 4% state.

The state pays the other 4%, mostly armory maintenance, and a handful of state employees that essentially are there to manage that state interest. When a governor declares an emergency, he signs his state up to pay for whatever the costs of use are for this federal equipment and personnel (You should see the jaws drop when you hand a state bureaucrat a bill for 8 hours of blade time on a CH-47...). Expensive, but still a tremendous bargain to every state. Much like US foreign policy, civilian state workers are 100% tapped out in day to day efforts, so do not "surge" for emergencies (other than road crews, emergency workers, LEA - all for overtime pay), so when some crappy job, like standing waist deep in sewage filling sandbags, comes up, they turn to the guard as their only reserve of "extra" manpower that comes organized, trained and equipped for action. So the rally cry is always "call up the guard" (pulling men and women away from their civilian jobs and creating hardships for them, their families, and employers) rather than "shut down the bureaucracy and focus on the emergency this week."

Some states do this very well, and have an "emergency fund" to pay these costs. Oregon does not, so every physical emergency is followed by a corresponding fiscal emergency.