As the bakkie pulled around the curve, Nyx saw what passed for the town of Faouda in the shallow valley below. Two tall, rusted towers to the north and east were contagion sensors; Nyx had seen a few like them at the front. When mutant bugs or miasmas came in from the wasteland, the towers let out a high, keening cry and saturated the air with a neutralizing agent. Sometimes the bugs got through; sometimes they didn’t. When the sirens went off, it was best to turn on your filters and cover up.