You close the command-bus breaker as if it might bite. A row of amber wakes. Fans in the computer bay sip current, not gulp it.

KILO’s voice returns from the ceiling, flat as a ruler. “Command data handling online. Safe-mode image. Clock survived. Star-tracker quality: unusable. Particle hits on the detectors. Do not use lost-in-space attitude from those cameras.”

Jax grins with only half a mouth. “Hi, brick.”

Mira nods at a quieter panel. “Sun sensors are little photodiodes. They do not identify stars. They only know where the brightest thing is, and right now that is still the Sun. The IMU—inertial measurement unit—is a set of gyros and accelerometers. It remembers how we have been turning, for a while, like counting steps in a dark gym.”

KILO adds, “Checklist item: attitude from sun vector plus IMU. Detumble. Arrays. Thermal. Navigation. Propulsion last.” It is not lecturing you. It is reading a file someone wrote because people get loud in storms.

The star-tracker power switch has a guard. Guards exist because the switch is tempting.