Aterm used by Central Intelligence Agency personnel for the countersurveillance course given by Jack Platt to officers assigned to denied areas. Having completed the course, which includes exercises conducted in Washington, D.C., Directorate of Operations staff are qualified to spot hostile surveillance, evade the watchers, and exploit moments in obscura when they may be out of sight and able to complete operational acts without discovery. During the Cold War, when the CIA’s principal adversary was the KGB Third Chief Directorate, the protocols governing the tradecraft were known as Moscow Rules.