Controlled  Area A controlled area usually does not contain classified information. It serves as a buffer zone to provide greater administrative control, safety, and protection for the limited  or  exclusion  areas.  These  areas  require personnel identification and control systems to limit admittance to those people having bona fide need for access to the area Passageways or spaces surrounding or adjacent to limited  or  exclusion  areas  may  be  designated  as controlled  areas. SAFEKEEPING AND STORAGE OF CLASSIFIED   MATERIAL Classified information or material must be stored under  conditions  that  prevent  unauthorized  persons from gaining access to it. The security requirements must allow work to be accomplished while providing adequate  security.  In  the  Navy,  the  commanding  officer is directly responsible for safeguarding all classified information within his command. He is also responsible to ensure that classified material is stored properly when not actually in use. Storage Whenever classified material is not under the personal control and observation of an authorized person, it must be guarded or stored in a locked security container. Top Secret material is stored in a safe or safe type of   steel   file   container   having   a   three-position combination lock as approved by the General Services Administration (GSA) or a class A vault that meets the standards   established   by   the   Director   of   Naval Intelligence. An alarm-protected area may be used to protect Top Secret material when the responsible local official decides that an alarm system provides protection equal to, or better than, the safe, steel file, or vault. The alarm-protected area provides a physical barrier that prevents removal of the material and prevents the material from being viewed by unauthorized personnel and  compromised. Secret and Confidential material may be stored in the same manner authorized for Top Secret or, in a class B vault, a vault type of room, or a secure storage room that has been approved according to the standards prescribed by the Director of Naval Intelligence. 14-5 Valuables,  such  as  money,  jewels,  precious  metals, narcotics, and so forth, should not be held in safes used to store classified materials because they increase the risk of theft. Only classified materials are to be placed in  containers  designated  for  storage  of  classified material. Container  Designations  and  Combinations Containers  used  for  the  storage  of  classified material   are   assigned   a   number   or   symbol   for identification  purposes.  The  identifying  numbers  or symbols are located in an obvious location on the outside  of  the  container.  Each  container  must  also  meet the security requirements for the highest classification of material stored in the container. However, this designation  is  not  marked  externally  on  the  container. Records  of  combinations  are  sealed  in  envelopes (OPNAV 5511/2) and kept by the security manager, duty officer, communications officer, or other person(s) designated by the commanding officer. Combinations for containers with noncryptographic material will be changed  under  any  of  the  following  conditions: When a safe is first placed into use Annually When the combination or record of combinations has  been  compromised  or  a  security  container  is discovered  unlocked  and  unattended Whenever   an   individual   knowing   the combination is transferred or discharged, or when the security  clearance  of  an  individual  knowing  the combination is reduced, suspended, or revoked When  you  are  selecting  new  combination  numbers, multiples  of  5,  simple  ascending  or  descending numerical series, and personal data (such as birthdays and  serial  numbers)  must  not  be  used.  The  same combination cannot be used for more than one container. Combinations  to  security  containers  are  changed only by persons that are cleared for the highest level of classified  material  stored  in  the  container. When a security container is taken out of service, built-in combination locks must be reset to the standard combination 50-25-50. Combination padlocks must be reset  to  10-20-30.