The first guard to see the gate thought the isolation bay’s inner door had opened onto the wrong room.
He knew what stood beyond that doorway: a short service passage, a turn and another controlled entrance. Instead he saw a depth that did not fit the building. Pale geometry crossed the passage at an angle to the ordinary walls. A work lamp hung in the wrong perspective, its cable taut where the floor should have continued beneath it.
Then the lamp went out.
The guard called the control desk. The reply broke into fragments. Behind him, a technician tried to open an emergency side door and found its frame distorted against a surface that had not been there a moment earlier.
The facility’s ordinary incident plan assumed the building would retain its shape. Fire could block one route, damaged equipment another. The plan had alternatives for those events. It had no symbol for a gate occupying the space between a door and the corridor to which the door belonged.
Rook arrived from the lower control approach with two engineers. The guard asked whether staff should withdraw to the outer assembly point. Rook told him to hold the approach and keep the route clear for technical work.
