As Zook and Luthal begin advancing on the camp, the hobgoblin looks back and forth at all three men. Kolarred notices on the hobgob's face that he seems a bit concerned that Zook and Luthal were comign from two different areas, almost like they were casing the campsite... however he doesn't make mention of this concern (if he indeed did have any).
By this point, the warforged has sat up, and it is obvious from the creak and grinding of metal that 'Grandpa' indeed needs some major modifications. If he sounds like that normally, you probably figure he's bound to fall apart any day now.
As Zook and Luthal walk into camp, they both have a niggling sensation that those wolf howls have been getting closer and closer. When another howl occurs it seems almost on top of them, and both Zook and Luthal think that they might encounter these wolves very quickly.