Could possibly be this also, just a guess. National Security Agency/Central Security Service Representative The senior theater or military command representative of the Director, National Security Agency/Chief, Central Security Service in a specific country or military command headquarters who provides the Director, National Security Agency, with information on command plans requiring cryptologic support. The National Security Agency/Central Security Service representative serves as a special advisor to the combatant commander for cryptologic matters, to include signals intelligence, communications security, and computer security. Also called NCR. See also counterintelligence. Dictionary of Military and Associated Terms. US Department of Defense 2005.