There are ~100,000 active duty troops stationed throughout California, there are ~20,000 California Guardsmen. 

Nearly all of the active duty forces are doing nothing to help the California wildfire situation. Partly because they haven't been asked to (especially if they don't already have a firefighting mission), also partly because using AD military within America has a lot of paperwork and rules. 

If the Department of Defense, in a future administration looking to cut costs, would say to itself, "we probably don't need this many people in a standing military, let's have the states handle most of the military things and then if there's a war we can revisit what we really need." state governors would have significantly more resources available for emergencies (both natural and manmade) available with a lot less coordination and paperwork. 

Yes it's simplifying a problem that would be immensely complicated to figure out how to accomplish, but every time there's a natural disaster where people need resources, I just think of how many physically capable men and women are going to sit in a motor pool all day instead of driving down the road and helping people in need.