I would say that due process goes right out the window if they were in a shoot out with him, but what I don't like at all is that unless they had x ray vision, they'd have had no way of knowing if there was a hostage in there with him when they set the place on fire.
I know "officer safety" and all that, but damn.
You don't need x-ray vision... thermal imaging does a pretty dang good job, at least for living persons.