If they’re in bunkers the FBI isn’t helping. Society has collapsed. Cut utilities and destroy generators from afar. You can trebuchet tar balls, rocks, anfo, napalm, whatever to deal with remaining resistance. Or yeah killdozer, they’re unlikely to have anything more than .50BMG and construction equipment is fleet keyed.
If they’re in bunkers the FBI isn’t helping. Society has collapsed. Cut utilities and destroy generators from afar. You can trebuchet tar balls, rocks, anfo, napalm, whatever to deal with remaining resistance. Or yeah killdozer, they’re unlikely to have anything more than .50BMG and construction equipment is fleet keyed.