Skater moved into the two-meter wide exhaust duct, his electromagnetic gloves and knee pads adhering to the metal sides even through the layers of soot. He went down from the tenth floor to the ninth floor, where the funeral home was. Wheeler came down behind him, following closely. The filtering systems above and below had drawn back into the recessed areas designed to hold them during semi-annual cleaning. The exhaust duct was clear all the way to the rooftop.