Limit dissemination; Prevent unnecessary reproduction; and Determine   the   office   or   person   normally responsible for the security of the material. With Top Secret messages, it is also important to keep a current record of who has the information and who has seen it. Since distinctions are made among the three levels of classification, distinctions are also made in the degree of accountability and control. Within each command,   specific   control   and   accountability procedures are established to ensure that classified material is properly controlled and that access is limited only to cleared personnel. SECURITY  PERSONNEL To  control  classified  information  with  maximum efficiency,  the  commanding  officer  designates  a security manager, usually an officer. The security manager is responsible for the command’s overall security  program,  which  includes  the  security  of classified information, personnel security, and the command’s security education program. In  addition,  the  commanding  officer  usually appoints a Top Secret Control Officer (TSCO). The TSCO   is   responsible   for   the   receipt,   custody, accounting, and disposition of Top Secret material in the command. The TSCO is normally subordinate to the  security  manager.  If  a  separate  person  is  not designated as the TSCO, the security manager maybe designated  as  TSCO.  The  duties  of  the  security manager and the TSCO are outlined in the  Security Manual. Besides the security manager and the TSCO, every command involved in processing data in an automated system must designate an Information System Security Officer (ISSO). The ISSO is responsible to the security manager for the protection of classified information processed in the automated system. Custody of Classified Material An individual who has possession of or is charged with  the  responsibility  for  safeguarding  and  accounting for  classified  material  or  information  is  the  “custodian” of that material or information. As a Radioman, you are constantly   in   possession   of   classified   material, including messages, publications, and equipment. Therefore, you are a custodian of classified material as long as the material is in your possession. As  custodian  of  classified  material,  you  are responsible for protecting and accounting for the material at all times. You must ensure that the material is protected from disclosure to uncleared personnel, such as a visitor being escorted through your working spaces.  If  working  outside  of  normal  communication spaces, you must ensure that classified material is locked in an approved security container when the material is not in use or under direct supervision. CARE DURING WORKING HOURS.— Every Radioman must take the necessary precautions to prevent   access   to   classified   information   by unauthorized persons. These precautions include: When  removed  from  storage  for  working purposes,  classified  documents  must  be  kept under constant surveillance or face down or covered when not in use. Preliminary   drafts,   carbon   sheets,   plates, stencils, notes, work sheets, and all similar items containing  classified  information  require  special precautions. They must be either destroyed immediately after they have served their purpose or  given  the  same  classification  and  safeguarded in the same manner as the classified material produced from them. Typewriter ribbons used in typing classified material must be protected in the same manner as the highest level of classification for which they have been used. Fabric typewriter ribbons may be considered as unclassified when both the upper  and  lower  sections  have  been  recycled through the machine five times in the course of regular typing. Those ribbons that are classified must be destroyed as classified waste. CARE AFTER WORKING HOURS.— At the close of each watch or working day, all classified material that is passed from watch to watch must be properly  inventoried.  Custody  is  then  transferred  to  the relieving   watch   supervisor.   All   other   classified material  must  be  locked  in  an  approved  security container. A system of security checks at the close of each working day is the best method to ensure that all classified material held is properly protected. Whether your watch section is being relieved by the oncoming watch or you are securing an office space, you should make an inspection to ensure as a minimum that: All classified material is properly stored. Burn bags are properly stored or destroyed. 5-7