“Only appear occasionally just make some general mayhem here and there.”
Only desultory Apache type raids on waayyy outposts where you know you are going to win. Make life miserable on the margins.
Just simple stuff. Two rocks with twenty foot of wire trown over the main power lines. Shutting off water valves to fire hydrants, fill the cement, then start a fire. You know just annoying stuff.
Their problem is criminals are stupid.
Professionals aren’t