le Adequate, rapid, and secure communications of high technical standards are essential to atomic test operations. 26 Eniwetok and Bikini Atoils will be utilized for future operations with Eniwetok serving as the logistical and operational base area. 30 A combination of shipboard and land-based command communications facilities will be required for future operations. he Evacuations of the test atcll and possible evacuation of other atolls will be required. 56 Task Group 7.4 will continue to be based on Eniwetok Island. Major communications missions will be assigned to the various task groups and will remain essentially the same as those assigned for CASTLE with the exception of the trend of TG 7,5 to provide services for TG 7.1. Te Task Group 7.2 will continue to provide and operate joint relay and cryptocenter facilities in addition to principal command and administrative communications circuits, A. Planning and Preparaticn, Early planning for communication facilities is essential since the exacting requirements placed upon communications for an overseas atomic test make it necessary that the facilities be care= fully designed and engineered as a system. 199 Because of the size of