At the 1800 weather briefing, the predicted winds were less favorable; nevertheless, the decision to shoot was view of the winds scheduled for 2400. reaffirmed, but with another The USS Renshaw, re- acting as the air controller between Enewetak and Bikini, was ordered repositioned from its planned 270° bearing, 90=-nmi erly 230° bearing 90-nmi (167-km) (167-km) range from Bikini to a more south- range from Bikini. flight, designated "Wilson 2," was set up at 2200. Bikini at H+2 at 10,000 feet (3.05 km) The cloud track It would hold west of in a position to intercept and warn of debris coming west toward Enewetak and Ujelang and then fly east after 2 hours, searching a sector between 55° and 85° through ground zero to find the cloud if it had not already appeared to the west (Reference 8). The midnight briefing indicated less favorable winds at 10,000- to 25,000~foot (3.05- to 7.52-km) levels. were headed for Rongelap to the east. Winds at 20,000 feet (6.10 km) The predicted speed of these winds was low enough to be of no concern, although it was recognized that both Bikini and Eneman islands would probably be contaminated p.- K-3). (Reference 16, The decision to shoot was reaffirmed, at least until the 04390 briefing. A burst-day flight to search for transient shipping was added at this time, to be centered on a 65° vector to a distance of 600 nmi (1,110 km). At 0430 "no significant changes" in the winds had occurred, except at Bikini where the lower level winds were showing more "northerly and westerly components." The JTF Radsafe Office recommended that the fleet sor-~ tie area southeast of Bikini be moved outward from 30 to 50 nmi km). (56 to 93 This was ordered for smaller and slower units, but the larger ves- sels remained in their original areas to maintain good UHF communications with the firing bunker on Eneu and to be in good position for prompt reentry. The USS Estes also had to be within range for its role as the mas- ter Raydist navigation system station in controlling experimental aircraft flights near the burst point. 202