Communications CJUTF SEVEN Noe 1-53 (3) Operate and maintain the LOS ALAMOS terminal of the ENIWETOK~ LOS ALAMOS RATT circuite (4) Provide alternate ZI relay facilities from Commnications Center, LOS ALAMOS, for forward area task force traffic during opera~ tional periods. (5) Install, operate and maintain, with the assistance of TG 7.2, DOD type tactical radio equipment required for use by TG 7ole (6) Install, operate and maintain TG 7.5 boat pool communications facilities. (7) Operate motion picture facilities at BIKINI and ENIWETOK ATOLLS (not to include those on ENIWETOK ISLAND). (8) Prepare and distribute a consolidated atoll telephone direc- torye (9) Provide a central receiving point for traffic (except TOP SECRET and RESTRICTED DATA) for TG 7.1 and TG 7-5 from the JTF SEVEN Communications Center. fo Al1 Task Groups (1) Prepare a task group communications and electronics plan and submit to Headquarters, JIF SEVEN by 1 August 1953. 1 September 1953. Foal (2) Submit requirements for frequencies, call signs, routing indicators and address groupa to Headquarters, JIF SEVEN prior to (3) Prepare task group telephone directory in quantity to be designated by consolidating and issuing agency (TG 7-5)e (4) In accordance with joint task force training directives, establish a transmission security training program for all intended users of voice radio facilities and a message drafter improvement ' program to insure most efficient use of limited operational commnihe ae| cations facilities. General ae The Army Task Group signal detachment will be brought up to its authorized operational phase strength and be prepared to perform its missions by 1 December 19536 De ‘Construction, rehabilitation and installation and service checking of military communications facilities in support of Operation CASTLE will be completed by 1 December 1953. Ce Signal Officer, TG 7e2 will operate a crystal grinding facility to provide emergency production of crystals for all elements of the task force. Task group communications officers will make every effort to procure all required crystals through their established supply channels prior to commencement of the operational phasee L-6