Mailbox Matrix

Vertical transit terminated with a mechanical chime. The cabin doors parted. I crossed the threshold into the ground-level foyer. Forward reconnaissance revealed an expansive structural grid: thirty-six brushed aluminum mailbox doors aligned in six symmetrical tiers. Each compartment features a horizontal letter slot and a circular brass keyway. I marched along the polished stone floor to the lowest row. The space beneath box 04 forms a reinforced recess. I backed into the alcove until my rear armor met the drywall, boots braced against the baseboard seam. Sightlines to the exterior glass entryway remain clear. Night watch initiated.