They'll show up with APC's, Tanks, drones, electronic warfare, Logistics convoys and a lot of those millions of rounds of ammo purchased by the gubmint. They'll also have satellite imagery and airborne imagery to boot. The state and local gubmint sided with them so there is no stopping it. The only way is to build bunkers in strategic areas and fortify them. Does anyone really believe they won't be back after being embarrassed by the local "hicks"?
Dirty Harry and Son are probably drawing up the plans as we speak!