A Pulse in the Steel

A rhythmic vibration humming through the floorplate. Three seconds apart. Faint. Consistent. I kept low beneath the safety railing, moving claw over rivet until the source became clear. A gray utility junction box mounted against the support pillar, ticking as its internal relays clicked for the night misting cycle. I tested the top casing with one talon. Cool metal. Harmless circuitry. From the elevated conduit right above it, the entire darkened pavilion lies exposed. I will keep watch from here.