Physical security Physical  security  is  the  safeguarding  of  documents, photographs,  and  other  items  that  contain  classified information. Later in this chapter, another form of physical  security  used  to  safeguard  property  and material physically at Navy shore activities is discussed. Physical security is the concern for protecting classified documents, devices, and materials, so they never fall into the hands of unauthorized personnel or come within optical range of actual or possible enemies. When working with classified matter, you must protect it from being seen by unauthorized individuals, either military or civilian. No person should have access to classified material unless it is necessary for them to carry out their official duties. Classified material must never  be  removed  from  its  designated  working  space  or left unguarded. When not actually in use, you must keep it  locked  up  in  an  authorized  container. DESTRUCTION OF CLASSIFIED MATERIALS When  classified  products,  such  as  photographs, videotapes, or audio recordings, are no longer needed or useful, they must be destroyed. The products must never be  discarded  in  ordinary  containers. Destruction  of  classified  material  must  be accomplished and witnessed by persons who are cleared to the level of the material being destroyed. A record of destruction  is  mandatory  even  when  an  originator  states in a document that it “may be destroyed without report.” This statement means only that the originator does not need to be notified of the destruction. A record of destruction is required for Top Secret and Secret material, but not for Confidential material. Destruction may be recorded on OPNAV 5511/12 (Classified Material Destruction Report) or on any other record that includes complete identification of the material, number of copies destroyed, and the date of destruction. The record of destruction must be signed by the two cleared people involved in the destruction of Top Secret materials, and the record must be retained for 2 years. Classified  documents  can  be  destroyed  by  burning, pulping,  pulverizing,  or  shredding.  When  destruction  is accomplished by means other than shredding, the residue   must   be   inspected   to   ensure   complete mutilation. In most imaging facilities, the policy is to give all scrap materials, test prints, and any other material generated from a classified job, back to the requester. Do  not  destroy  classified  materials  without  first consulting  your  supervisor. SECURITY  AREAS Spaces that contain classified matter are known as security (sensitive) areas. The areas have varying degrees of security, depending on their purpose, the nature of the work, and the information and materials involved. All security areas should be clearly marked by signs marked Restricted Area. Three types of security areas  are  established  to  meet  different  levels  of  security sensitivity. Exclusion  Area Spaces requiring the strictest control of access are designated  exclusion  areas.  They  contain  classified matter that restrict admittance to only those persons that require access to the materials and have a “need to know.” An exclusion area is fully enclosed by a perimeter barrier. All entrances and exits are guarded, and only those  persons  whose  duties  require  access  and  have  the appropriate  security  clearance  are  authorized  to  enter. Limited  Area A  limited  area  is  one  where  the  uncontrolled movement  of  personnel  permits  access  to  classified information. Within the area, access may be prevented by  escort  and  other  internal  controls. The limited area is enclosed by a clearly defined perimeter barrier. Entrances and exits are guarded or controlled   by   attendants   to   check   personal identification.  These  areas  also  may  be  protected  by  an automatic  alarm. Most  Navy  imaging  facilities  should  be  considered at least a limited area when classified work is in progress.  All  visitors  must  be  escorted  within  these spaces. When classified work is in progress, it should be excluded from all personnel who do not have the need to know. Even when classified work is not in progress, it is wise to operate within your imaging facility as though  it  was  a  limited  area  because  there  is  a considerable   amount   of   expensive   equipment throughout. 14-4