Officer technical specialists in naval guns, rockets, and rocket launchers, missiles, bombs, and related launchers, guidance and control systems. They train and supervise personnel in assembly, maintenance, and repair of surface ordnance, equipment, components, and related systems; coordinate, plan, and direct logistics, handling, and safety procedures for all phases of ordnance operations. An officer of the Naval Reserve on active duty in the FTS Program (Full Time Support) [Includes officers of the FTS Program rotated to other than FTS billets].