cn 2 was ordered at 1200 to return to the holding pattern. At 1215, -. 2 reported encountering cloud segments of approximately [2 R/hr at .crthwest corner of the holding pattern. In order to evaluate the c.ollity of fallout at Enewetak and also to determine aircraft backoa, this aircraft was also ordered to proceed to a positiorj cich end of the pattern. Subsequent reports showed no cloud mpving coward Enewetak, and the aircraft's background was 0.240 R/hr. > alreraft was directed to proceed to the originally specifi 22 east of Bikini. in the No radiation above background was encoun At 1430, search red on a sequent search out to 13.5°N, 171.5°E (100 nmi [185 km] west of Bikar) ‘a thence to base. The crew exposure on Wilson 2 and Wilson 3 during ase flights was of the order of 1.4 R (Reference 16, Tab Ly 39). Wilson 4 was directed at H+l12 to proceed from Enewetak at a “tot (3.05-km) altitude to a sector bearing 60° to 90° from gro d search out to 500 nmi (926 km). ‘AS via a point 16°N, 162°F. From this sector the returff to base The flight was performed as order@d, and no ladiation was encountered. Wilson 1 collected heavy-element samples; it "encountered h@avy radia- tion necessitating immediate return to base." The specific radjation lev- els encountered are not known; however, the highest reading on returning to base following ROMEO was 20 R/hr (Aircraft No. 219 y WB-29 see Table 35). Subsequent Wilson flights were cancelled when no appreciabld tamination appeared to exist at that time in the vicinity of th@ air contest site. No D-day fallout was deposited on task group ships in the s At approximately 1800, the USS Epperson, on security patrol 50 Sebaad northwest of Bikini, reported fallout with average readings of and maximums of 0.100 R/hr. @.025 R/hr The Epperson left the area at 1900 jto avoid unnecessary personnel exposure. 261