The big samurai nodded. "There's some debate on that," he said quietly. "Toshi, he's got what he calls his 'cool suit.' Chemical cool-packs under his armor to lower his body temperature. Though I think it just slows him down." The smaller razorguy shot Argent a sour look. "I prefer these," the leader went on, touching the grenades hanging from his bandolier. "Thermo grenades. They kick out more heat than light, so they're more dazzling to thermographic vision than normal vision."