spread to the aortheaet under the influence of the strong winds from the southwest. The purpose of the presentationwas to present information to the Canmamier Alr Forces, enab~ng him to make an operationaldecision on the feasibility of directing late drom paesea thro~h the atmdc cloud. 30 Cblitted. 4. Conments. a. A high level balloon run was echeduled just ptior to and just after the detonation. These runs both failed at a c~aratively 10U altitude (45,000) due to balloon failure. This points to the desirabilityof obtaining better quality balloons. b. The search plains on course at distances of fifty to one hundred miles fmm the atoll were used to report weather radar fixee. These planes were especially equipped with very sensitive radar gear. Duxd.ngthe interval before the shot, numerow radar fixes fromthese craft were reported, but it was difficult to evaluate whether the fties wexw shwere or heavy moisture clouds. 40 SECTION XII \