As part of this thought experiment, what policing are being disbanded and what is being done by other policing and government groups to enforce other regulation

As part of this thought experiment, what policing are being disbanded and what is being done by other policing and government groups to enforce other regulations? For example, if a town's police system disbanded, but the state police still enforced laws against members of the town preventing them from engaging in their own policing, that creates a different scenario than if the state police didn't enforce any laws against the members of the town acting like the previous police force did. If even the military refuses to touch the area, given a threat that would normally allow the military to act like a foreign invasion, then it is a different situation compared to when you have a lawless area that's still protected from external threats.