AEROGRAPHER'S MATE 3 & 2 



might compromise the entire plan. Another 

 danger is that a photograph might be taken in 

 a split second with a concealed camera. 



It has been stated that the Navy's security 

 system operates on the principle of "need to 

 know." It is essential then, that combinations 

 and keys to classified containers be known only 

 to those who are actually using the material in 

 their work. To ensure this, certain rules must 

 be followed. 



The combination or key to a security con- 

 tainer should be changed at the time it is re- 

 ceived, at the time of transfer of any person 

 having knowledge of it, at anytime there is rea- 

 son to believe it has been compromised, or in 

 any case at least once every 12 months. 



If a container in which classified material 

 is stowed is found unlocked in the absence of 

 assigned personnel, it should be reported im- 

 mediately to the senior duty officer. The un- 

 locked container must be guarded until the duty 

 officer arrives at the scene. The duty officer 

 then inspects the classified material involved, 

 locks the container, and makes a security viola- 

 tion report to the commanding officer. Appropri- 

 ate further action is taken by the commanding 

 officer. 



Accounting 



Except for publications containing a distri- 

 bution list by copy number, all copies of Top 

 Secret documents must be serially numbered 

 at the time of origination in the following man- 



ner: "Copy No. 



.copies.' 



A list of all persons having knowledge of 

 a particular item of Top Secret information 

 must be maintained and a continuous chain of 

 receipts kept to ensure positive control. The 

 control of Top Secret material is the duty of 

 the Top Secret Control Officer. 



CUSTODIAL PRECAUTIONS 



Each individual in the Naval Establishment 

 should take every precaution to prevent delib- 

 erate or casual access to classified informa- 

 tion by unauthorized persons. Some of the 

 precautions are discussed in this section. 



When classified materials are removed from 

 stowage for working purposes they should be 

 kept face down or covered when not in use. 



Visitors not authorized access to the partic- 

 ular classified information within a working 

 space should be received in a specially desig- 

 nated visiting space. 



Classified information should never be dis- 

 cussed over a telephone. Remember also that 

 a telephone scrambler device does not ensure 

 security. 



If, for any reason, a room must be vacated 

 during working hours, all classified material in 

 the room must be locked in its proper stowage 

 containers. 



At the close of the working day a system of 

 security checks should be carried out to ensure 

 that the classified material is properly pro- 

 tected. All classified material must be prop- 

 erly stowed. All classified material which must 

 be passed from watch to watch has to be prop- 

 erly accounted for. All burn bags should be 

 burned or properly stowed. The contents of 

 wastebaskets which contain classified material 

 must be burned or stowed. All classified notes, 

 rough drafts, and similar papers are placed in 

 the burn bag during the day as a matter of 

 routine. 



Personnel concerned with locking combina- 

 tion locks or safes must remember to rotate 

 the dial of all combination locks at least four 

 turns in the same direction when securing them. 

 In most locks, if the dials are given only a 

 quick twist, it is generally possible to open 

 the lock merely by turning the dial back in the 

 opposite direction. Also, responsible personnel 

 are assigned to check all drawers of safes 

 and file cabinets to assure that they are held 

 firmly in the locked position when secured. 



In the event of a fire alarm or other emer- 

 gency, classified material is stowed in the 

 same manner as at the end of a working day. 

 Each person who has classified material in his 

 possession at the time of a fire alarm or other 

 emergency assures that the material is prop- 

 erly safeguarded. 



Other examples of handling classified ma- 

 terial during emergencies are discussed in 

 OPNAVINST 5510.1 (Series). 



DISPOSITION OF 

 CLASSIFIED MATERIAL 



When military personnel resign or are to be 

 separated from the Navy or released from ac- 

 tive duty, all classified material held by them 

 is turned in to the source from which it was 



420 



