Their duties were to oversee and evaluate compliance of individual units with task group radsafe requirements. In addition to providing their own radsafe monitors airborne monitor for each TG 7.3 multiengine aircraft) ment (including one and radiac equip- (with responsibility for its repair and calibration) TG 7.3 provided: Monitors and decontamination crews aboard each ship within the task group Facilities for personnel decontamination on the Bairoko Facilities for the radsafe unit (Radsafe Center) of TG 7.1 when the task force was embarked Decontamination crews and facilities for all aircraft at Bikini Atoll Decontamination crews and facilities for TG 7.3 aircraft aboard the Bairoko at Enewetak Atoll; limited assistance ashore was furnished by CTG 7.4 as required Helicopter air service for radiological surveys and postshot recovery operations (monitors furnished by TG 7.1) Collection of lagoon water samples for radioactivity analyses Water-spray equipment aboard all vessels likely to be in the fallout area Air-to-ground reporting of approximate air radiation intensities encountered by all aircraft operating between Enewetak and Bikini from H-hour to H+24 during the Bikini phase. _ TASK GROUP 7.4. Within TG 7.4, each of the three subordinate units shown in Figure 15 had specific operational responsibiities. Support Unit (TSuU) The Test responsibilities were: Provision of helicopter and liaison air service for radiological surveys and postshot recovery operations with monitors furnished by TG 7.1; monitors also gave full mission instructions Provision of radiac equipment, decontamination equip~ ment, and protective clothing throughout TG 7.4 Maintenance of TG 7.4 radiac equipment (repair, spare parts, calibration) 85