She relied on the Mado’s manual instrumentation and a set of rudimentary dead-reckoning skills practiced long nights in the hangar. Using solar reflections on the instrument port, the craft’s subtle vibration signature, and a mental map of the ground, she threaded the JUQ-761 through the corridor. At one point she temporarily disabled the primary nav stack and fed the backup with patched signals from a jury-rigged inertial module she’d soldered herself. The craft’s engines chewed and the airframe groaned, but the Mado answered.