N — 7.4 radio circuits. Commander, Task Group 7.4 may impose radio silence as required for accomplishment of his mission. je Since the new phonetic alphabet (ALPHA, BRAVO, COCOA, etc.) is not being used by all services, the old phonetic alphabet (ABLE, BAKER, CHARLIE, etc.) will be used. 3. MONITORING: a, Communications channels of Task Group 7.4 in the forward area will be monitored by communications security personnel of Joint Task Force SEVEN. They will analyze messages to detect violations of security, to determine the amount of information of an intelligence value being made available to wauthorized agencies, and to make recommendations as to nec~ essary corrective action. 4. RESPONSIBILITY: &. Commanders are responsible that communications security is observed at all times. b. A high degree of communications security will minimize the danger of compromise of classified information. The following functions are necessary to establish an acceptable degree of communications security: (1) Adherence to provisions of ACP 122(B), "Communications (2) Indoctrinations of all personnel in the need for Commun- (3) Operation of all communications facilities in accordance Instructions, Security." ications Security. . with procedures as prescribed by Joint Task Force SEVEN Communications Operation Instructions (COI's). c. Commanders of the Task Units of Task Group 7.4 will be respon- sible for the supervision and coordination ters within their respective Task Units. of communications security mat- d. It is mandatory that classified matters not be discussed over any voice radio circuits including VEF and UHF radios. Users of voice circuits will be held responsible for security violations. 5. MESSAGE TRAFFIC: a, Each message written for electrical transmission will be b. The tributary cirouit (wire) between Headquarters, Task Group classified according to its contents. 7.4 and the Joint Communications Center on ENIWETOK is approved for trans- mission of messages up to and including SECRET, c. When Task Group 7.4 is based at ENIWETOK, TOP SECRET and RE~ STRICTED DATA messages will be handcarried between Headquarters, Task Group and the Joint Communications Center. d. <A message drafters improvement program will be placed in effect by all units of Task Group 7.4, with special emphasis on the fol-~ lowing: (1) Proper classification TASK GROUP 7.4 . OPRS ORDER NO, 1-54 ANNEX E, APNDX 3 E3~-2