Except in those cases where an intelligence source  or  method  would  be  revealed,  mark portions of United States documents containing foreign government information. Make sure the marking  reflects  the  country  or  international organization of origin as well as the appropriate classification such as (NATO-S) or (UK-C). In certain situations, parenthetical portion marking is impractical. In such cases, include on the face of the document a statement that identifies the exact information that is classified and the classification level assigned. Mark  the  classification  in  full,  not  in  an abbreviated  form,  on  figures,  tables,  graphs, charts,  photographs,  and  similar  illustrations incorporated in classified documents. Ideally, you should center the classification marking just below the illustration. Special situations may dictate placement of the marking above or actually within the  general  area  of  the  illustration.  If  the information  requires  a  caption,  place  the abbreviated classification marking for the caption immediately before the text of the caption. When figure or table numbers identify the caption, place the abbreviated marking after the number and before the text. Transmittals A transmittal document or endorsement carries the highest classification of the information it transmits. It also contains a statement showing the classification of the transmittal document. An example is an Unclassified letter that transmits a classification of the enclosure and the notation “Unclassified upon removal of enclosure.” Also show on the transmittal document any warning notices, intelligence control markings, or special notations on enclosures. Include downgrading and declassification instructions only when the transmittal  itself  is  classified.  Otherwise,  the notation that the transmittal is “Unclassified upon removal of the enclosure” is the only instruction needed. Figure 9-17 shows a sample of a letter of transmittal. Electrically Transmitted Messages Mark classified messages at the top and bottom  with  the  overall  classification;  also, portion mark as prescribed for other documents. You may use the automated system that prints a message to print the classification markings also, as long as the markings are legible. Include the overall classification, spelled out, as the first item of information in the text of a classified message. Spell out the identification for Restricted Data, Formerly Restricted Data, or Critical  Nuclear  Weapons  Design  Information following the classification; but use the short form for intelligence control markings. Show the date or event for declassification or the notation “Originating Agency’s Determina- tion Required” (fig. 9-18) on the last line of text of a classified, electrically transmitted message. You may omit the downgrading or declassifi- cation annotation on messages containing Re- stricted  Data  or  Formerly  Restricted  Data; however, show the basis of the classification on the originator’s record copy. Show the full marking on copies of messages not electrically transmitted (such as mail or courier copies). Training or Testing Material Mark classified material used for training or testing purposes and handle as appropriate for that level of classification. When Unclassified matter is used for training purposes, mark it with the following notation: “(insert the type of classification) for training, otherwise Unclassified.”   You  may  purposely mark incorrectly as classified any Unclassified material used to test automated communications systems. Annotate the material as “classified for test purposes only” and handle as Unclassified material. Special Access Program Material When warranted, material containing infor- mation  subject  to  the  special  access  program receives additional marks. Mark special access program  material  as  prescribed  in  directives, regulations, and instructions relating to approved special  access  programs.  You  may  change  or remove the markings only by direction of the authority  responsible  for  the  special  access program  concerned. Nuclear Propulsion Information Classified naval nuclear propulsion informa- tion (NNPI) is exempt from the requirements for portion markings. In documents containing both classified NNPI and  other  classified  information,  mark  those portions containing classified information other 9-37