CLASSIFICATION MARKINGS ON IMAGING PRODUCTS The requester of imaging products determines the security classification of the product according to the guidelines  contained  in  OPNAVINST  5510.1.  Each original and all photographic copies that are classified must   be   marked   with   the   appropriate   security classification,  the  classification  authority,  and declassification  and  downgrading  instructions  based  on the  original  classification  markings. Photographic  film,  prints,  and  slides  that  are classified  must  be  marked  with  the  appropriate classification  and  other  applicable  markings. Film Roll negatives are marked on the base side with the classification  and  associated  markings  at  the  beginning and end of each strip. Single negatives cut from the roll or   single-   sheet   film   negatives   must   also   be appropriately marked on the base side. These materials must  be  kept  in  envelopes  or  film  canisters  with conspicuous  markings. Transparencies  and  Slides The  classification  and  associated  markings  must  be shown clearly on the slide mount or transparency frame and whenever possible on the image area. Because the classification  on  35mm  slides  are  not  conspicuous  until they are projected, the classification must be marked on the slide mount. It is not necessary for each transparency of a set of transparencies to bear applicable associated markings  when  the  set  is  controlled  as  a  single document. In such cases, the first transparency bears the applicable  associated  markings. A camera that contains exposed film of a classified subject must be given the same protection as the classified subject. Be cautious with Polaroid film when photographing  classified  material.  All  waste  products produced  by  these  films  must  be  destroyed  as  classified waste. Prints All 8x10 and larger prints must be marked with the classification at the top and bottom of the face side with the associated markings at the bottom. On smaller prints the classification is required to appear only once on the face  side.  When  it  is  not  practical  to  place  the classification and associated markings on the face side 14-3 of prints, the markings can be placed on the reverse side, using a pressure tape label or a stapled strip when stamping is not practical. All photographic repro- ductions must show the classification and associated markings  clearly. Motion-Media   Products The beginning of each reel of film or videotape must be marked with a title that bears the classification and associated markings. These markings must be visible when projected on the screen or played through a monitor. Only the overall classification is required at the end of the reel or videotape. Reels and cassettes must be marked with the appropriate classification and kept in containers that are marked conspicuously with the classification  and  associated  markings. DISCLOSURE  OF  CLASSIFIED  MATERIAL When  classified  matter  is  entrusted  or  made  known to you, you must protect it against loss or compromise. You are responsible for any act or failure that contributes to the loss, compromise, or unauthorized disclosure of classified  information.  This  includes  information  that  is passed  verbally. When you are found responsible for the loss, compromise,  or  unauthorized  disclosure  of  classified matter or when you violate security regulations, you can expect to be disciplined promptly. Disciplinary action may include, in the case of military personnel, trial by court-martial or, in the case of civilians, prosecution under Title 18, United States Code, as amended, or other federal  statutes,  as  appropriate. PROTECTIVE MEASURES Generally,  there  are  four  ways  that  classified information is protected: censorship, physical security, transmission security, and cryptographic security. As a photographer, you will be concerned primarily with personal  censorship  and  physical  security. Personal   Censorship Censorship places a barrier between classified information and unauthorized personnel by preventing disclosure  in  the  form  of  letters,  conversations,  and personal  contacts.  Restricting  information  at  the  source, except for official use, depends on the integrity and discretion  of  the  individual.