Duty on the security deck is perhaps one of the quietest assignments aboard the Nemesis - while any room occupied by hundreds of people generates a certain number of background decibels the nature of the work done here demands that no man overhear or see from the corner of his eye more than he need to complete his tasks, a state of affairs rigorously enforced by patrolling section chiefs. At the heart of the security centre is the raised dais typically occupied by Chief Kohn during the first and third watches, his station stands conspicuously empty at the moment.