of ee nen eee mtr 7.4, radio circuits. Commandr, Task Group 7.4 may impose radio silence as required for accomplishment of his mission, : 7 Se Since the new phonetic alphabet (ALPHA, BRAVO, “COCOA, ote) ; ‘ts not being used by all services, the old Phonetic alphabet (ABLE, BAKER, CHARLIE, ete.) will be used. - . - "3, yonrroRna: Qe Comunientions 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 . . t.. .. : determine the amount of information of an intelligence value being made available to unauthorized agencies, and to make recommendations aste necessary corrective action. . he RESPONSIBILITY: so , ae Commanders are| responsitie that communications securityis - observed at all times, . bo 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: | Ee oe ~ . (2) Adherence to ‘provisions of acee (3), "Communications a eT Instructions, Security". _— oe(we“Indoctrination of all parece) in the neba for‘aie a te a tea ne - che 2) ‘Qperation’Of‘all “Gommunicstions ‘facilities ‘dn acéordance a i . with procedures as prescribed ‘by Joint Task Force SEVEN | >. _Commmications Operation |“Instructions(00's).22_— ed~ Comnandcirs of ‘the ‘Task’‘Units of. Task Group 74 will be rés=- o ee -“pocatbia for the supervision and coordination of communicdtions security pS ee ae matters within ‘their respective Task Units, 4 we ot . 7 er aS ate:ismandatory that’ classified1mattersSet be discussed ¢over. -* oh .. any voice.“Sadie circuits including VHF and UHF radios. ‘Users. of voice ue circuits wi be sei neeponasbie.‘for security violations. “En "‘ssice TRAFEL . -Bach massagewritten for electrical 1 tranenseion wa be: elngeified“according” to:its contents. " Spethe tributary ‘girendt: ‘Gire) between’ Headquarters, TaskGroup --7,4,-and the Joint Communications Center on ENIWETOK is approved ‘for - transmission of messages | up’ to and Ancluding SECRET,. a Re ce " When ‘Task.Group’ eh is based ‘at“ENIWETOK;: “TOP SECRET and. . veer ~ RESTRICTED DATA messages will be handcarried between Headquarters,Task po ~ Group and the Joint Communications Center. an - Se ee oo woe Sal cae de A message‘drafters smprovnentprogram. will be placed in ane bo i effect by all. unite f.Task’Group 7.4; :with Special emphasis on the “ee