requests   only   from   active-duty   commanding officers.   When   OP-09N   grants   an   LAA,   com- manding  officers  then  assume  responsibility  for briefing  the  person.  They  also  have  the  respon- sibility  of  limiting  the  person’s  access  to  that information  authorized  and  debriefing  the  person at  the  end  of  the  access  period. The CNO (OP-09N) will authorize access only for the specific purpose and the specific classified information stated in the request. In the case of non-U. S. citizens, the information requires release from the country of origin. The authorization will be  effective  for  the  period  of  time  necessary, subject to reinvestigation every 5 years. Physical custody  of  classified  material  is  normally  refused. Unlike  a  security  clearance  or  a  command-granted access, an LAA is not entered on the Certificate of  Personnel  Security  Investigation,  Clearance, and  Access. ACCESS BY RESERVE PERSONNEL Reserve  personnel  who  have  an  appropriate clearance  may  be  granted  access  to  classified information  for  active-duty  training  or  inactive- duty  training.  The  clearing  authority  or  the authority  with  the  information  to  be  disclosed determines  the  need  for  access.  Access  granted  for inactive-duty training should be recorded on the Certificate  of  Personnel  Security  Investigation, Clearance,  and  Access. Inactive Reserve personnel are ineligible for access  to  classified  information  unless  they  are specifically authorized by OP-09N under limited clearance  procedures. Reserve personnel are granted access to training editions  of  the  following  documents  as  required to  maintain  proficiency  in  their  specialties: Codes Cipher systems Authentication  systems Call-sign  encryption  systems Operation  instructions Maintenance manuals They  are  also  granted  access  to  COMSEC  publica- tions listed as study materials for advancement in  rate.  Additionally,  selected  units  are  authorized access to operational COMSEC materials. Properly cleared inactive-duty personnel taking part in unit drills  with  these  selected  units  are  given  access  to COMSEC materials as required in the perform- ance  of  their  duties. ACCESS BY RETIRED PERSONNEL Retired   personnel,   including   those   on   the temporary disability retired list, are not entitled to  access  to  classified  information  because  of  their present  or  former  status.  Commanding  officers grant   retired   personnel   access   to   classified information  only  when  it  will  promote  national security.   Commanding   officers   may   submit   a request  for  access  authorization  to  OP-09N. RECORDING  ACCESS Record access granted by a command, prefer- ably   on   the   Certificate   of   Personnel   Security Investigation,   Clearance,   and   Access,   OPNAV Form  5520/20.  The  commanding  officer  or  his or  her  designated  representative  must  sign  all access entries. The  commanding  officer  makes  certain  the Comments  section  of  OPNAV  Form  5520/20 contains  any  access  restrictions  that  apply  to personnel. ADP  SECURITY Automated data processing (ADP) security is a  Navywide  responsibility.  It  includes  security aspects  that  contribute  to  the  protection  of  the total ADP activity, office information system, or network.  It  involves  the  following  elements: Physical  security,  administrative  proce- dures,  operating  procedures,  and  personnel Communications  and  emanations Hardware,  software,  and  data The level of data processed by an ADP activity or network and the cost of carrying out an ADP security program require careful management of ADP  security.  All  Department  of  the  Navy  (DON) activities  must  regularly  review  and  continuously monitor  their  ADP  security  program. The ADP security program will protect ADP activities,  office  information  systems,  and  net- works  and  the  data  they  process  as  outlined  in appropriate  directives. Refer  to  the  ADP  Security   Manual,  OP- NAVINST  5239.1A,  for  a  thorough  description of  ADP  security  policies  and  procedures. 9-44