A Controlled position in the PRP requires an NACI or DNACI investigation within the past 5 years  before  assignment.  Continued  assignment to  a  Controlled  position  is  also  allowed  with  an update  of  the  investigation. Initial  assignment  in  the  program  is  interpreted as the first time a person is screened and qualified for   the   program,   regardless   of   the   position occupied.  Subsequent  assignments  in  the  PRP require   a   reinvestigation   under   the   following conditions: 1. 2. When  the  person  has  been  out  of  the program  more  than  5  years When  the  requirements  for  the  PRP position  currently  being  considered  have not been satisfied by an investigation within the last 5 years When  military  personnel  have  a  break  in active  duty  of  more  than  1  year,  investigations completed  before  the  break  become  invalid  for assignments to the PRP. However, they may be used  to  determine  if  a  person  is  eligible  for  a clearance.  Included  are  persons  who  transfer  from active duty into the Reserves for over a year and then   return   to   active   duty.   An   investigation completed in the previous tour of active duty is also  invalid  for  PRP  assignments. ACCESS  TO CLASSIFIED  MATERIAL The  Department  of  Defense  uses  the  simple principle   of   circulation   control   to   maintain security   of   classified   information.   Circulation control  means  that  knowledge  or  possession  of classified   information   is   permitted   only   by persons requiring access in the interest of national security.  Only  personnel  who  are  eligible  are granted access. No   one   is   granted   access   to   classified information  solely  because  of  rank,  position,  or a  security  clearance.  The  person  authorized  to have  possession, knowledge,  or  control  of classified information has the final responsibility for deciding whether a person requires access to that  information. The preceding security precautions also apply to  access  by  another  federal  agency,  a  defense contractor, a foreign government, or an organiza- tion  such  as  a  command. GRANTING  ACCESS Commanding  officers  have  the  authority  to grant  access  to  classified  information  and  are responsible for the security of the information or materials  in  their  command.  They  may  grant access  to  classified  information  to  persons  who have an official need to know or a valid security clearance.  They  may  also  grant  access  if  local disqualifying information is unavailable about a person. The  commanding  officer  should  take  the following  steps  in  granting  access  to  a  member of  a  command: 1. 2. 3. 4. Determine  the  level  of  access  necessary  for the  person  to  perform  his  or  her  official duties  (need  to  know). Check   the   person’s   official   personnel record and determine if he or she has, or is  eligible  for,  the  proper  clearance. Review   the   available   command   records and   reports   for   possible   disqualifying information. Grant  the  access  and  record  it  if  the person has the proper clearance and, dis- qualifying  information  is  unavailable. Since  granting  access  is  a  command  respon- sibility, access is terminated automatically when the   person   transfers   from   the   command,   is discharged, or is separated from federal service. It is also terminated when a security clearance is withdrawn,  denied,  or  revoked  for  any  reason. When  questionable  or  unfavorable  informa- tion becomes available on a person who has been granted access, commanding officers may decide to  restrict  or  suspend  access.  They  may  use  a restriction  or  suspension  of  access   for   cause only  as  a  temporary  measure  until  the  person’s eligibility  for  access  is  resolved. LIMITED  ACCESS  AUTHORIZATION Commanding  officers  may  sometimes  grant access to classified information to a person who is ineligible. The person maybe someone outside the   executive   branch   of   the   government   or someone who is otherwise ineligible for a security clearance. Commanding officers may grant such access  only  in  the  interest  of  national  security. Those  commanding  officers  who  decide  to  grant access to such a person should submit a request to CNO (OP-09N) for a limited access authoriza- tion (LAA). The CNO (OP-09N) will accept LAA 9-43