Waterhouse climbs a paneled stairway to what the Brits call the first floor, and find it quieter and cooler. The high panjandrums of Bletchley have their offices here. If the organization is run true to bureaucratic form, Waterhouse will never see this place again once his initial interview is finished. He finds his way to the office of Colonel Chattan, who (Waterhouse’s memory jogged by the sight of the name on the door) is the fellow at the top of the chart of Detachment 2702.