As he's wriggling through the hole, his coverall makes popping and hissing noises as the hot, sharp metal melts and tears through the synthetic material. He ends up leaving scraps of it behind, welded to the hull. He's got a few first- and second-degree burns on the parts of his skin that are now exposed, but they don't really hurt yet. That's how wound up he is. Later, they'll hurt. The soles of his shoes melt and sizzle as he treads on glowing hunks of shrapnel. The room is rather smoky, but aircraft carriers are nothing if not fire conscious, and not too much in this place is flammable. Hiro just walks through the smoke to the door, which has been carved into a steel doily by Reason. He kicks it out of its frame and enters a place that, in the blueprints, is simply marked PASSAGEWAY. Then, because this seems as good a time as any, he draws his katana.