bility of ecae contamination in the aroge & meesage a2 dispatehed to TG 7.4 requesting Viileon 3 to alter his search ares in such a manner as to cover the atoll area to the cast. Ca Subsequent Wilson flighte (for plus one day) were cancelled when it appeared that no air contamination problem existed af that times a. The 10,000 foot flight levels for the Wilscn aircraft had been picked to assure survey in the lowest shear level and thus awid overly | Complicated and less reliable analysia of ultimate cloud movement which would arise from higher level survoys. Ke?