ql & aovenant should beooms necessary to take aivantage of 4 sudden peather change. ews was received of the cancellation from the ‘ schedule of the shot designated KGIO. fo clean up the remaining three shots it hai been decided to firs ons shot, RECTAR, ab Eni- wetok, and two, UNION and YaRRKZ, at Bikini, zhile the Joiat Task Force waited for the weather to permit then to fire UNION at Bikint, Bcientifie personnel awis preparations for X.cTaR of Eninetok, kKhea it begem to appear that MecTaR would be ready before UN16H coxld be fired, an alternate firing plen was made, usier which either shot would be fired uhenever the weather permitted. =; fo fire at Bikint the wiads had to be from « quarter that would not deposit fall-out ou Eninetek bo the west, cr the abolis te the cast ani southeast. BucTaR could be fired at Eninetok only wien the winis would prevent ary appreciable fall-out on the two heevily populatedislents at the southarn emi of the ateli, Parry aud Eninetek, and on Ujelang stoll, 125 siies te the soubhrest. Either shot sould be firod then the weather first permitted it, with UNION receiving pricrity should the woalher be fevorable fee both shote an the sams day, to clem the rey for TANKER, the remaining Bikini shot. he & 22 ipril, wlth UMl0N hill unfired, RacTah was ready, and the task croup was prepared to ecmmance execution on the schedule of events for either shot with minima warning, APACHE and SIOUx were set to their initial stations off Eniwetok to lay fallout ecllectore for Project 2.5a. On the morning of 23 april APACHE ezperienced a serious casualty to her electrical contrel boards for 166 AFWLIRO