They were taken to a building festooned with roof antennae. Inside, they walked down a flight of stairs, then along several featureless halls, emerging in a chamber filled with consoles and people working at them. Each of the stations was equipped with a privacy screen that restricted the computer’s projections exclusively to the operator directly in front of it. No one looked up from the workstations as they entered, but the guards noticed. Steely eyes had fastened on them as soon as they appeared.