support to push on through and basically go past all the booby traps and defense positions that iraq laid out there. they've moved in very quickly in the last month or so, and they're now, it seems, about 3 kilometers away from the city center. the question really is, is this pace of progress going to sustain, or are they going to get bogged down in the dense urban areas of raqqa? there seems to be less civilians inside, for example, in mosul and iraq, people that have to deal with booby traps. there could be 150,000 less, but most importanting about 2500 isis fighters. that's not very many given the sheer ranks of opposition fighters around the american fire power at play right now.