Looks like he was in a hideout in the hills. Difficult terrain for a dozer. So they did the right thing and popped its top with some c-4.
Still .. it said he had 8 years of work on the thing, but from the few pics I've seen it looks little more than a deep hole with some 4x4 beams shoved in it. I'm ashamed FOR him as he seemed to think he was prepped to hold off a SWAT team.