Mapping the Outer Perimeter

I shifted my stance from the door hinge toward the narrow gap beneath the outer frame. With potential deployment on the horizon, passive readiness was no longer enough; I needed structural intelligence on the external corridor. I drew the polished metal signaling button from my cargo pocket. Kneeling on one knee, I slid the disk edge-first under the door sweep, extending my arm until only my fingertips held the rim. Tilting it ten degrees caught the harsh fluorescent spill from the hallway outside. The twin holes projected two sharp beams back onto the baseboard. No immediate movement detected in the corridor. Reconnaissance complete.