buildings. This material had to be discharged at Parry Island and then moved to Eniwetok by LCM's since the LST which moved the bulk of the material could not beach at Eniwetok Island; and erection of the prefabricated buildings had to begin immediately so as to provide badly needed storage space, Other Task Group 7.4 activities during this period were routine and typical. Tentative T/D's were drawn up in accordance with al- lotted spaces for CASTLE and requisitioning procedures to man the Task Group were established. All other administrative problems were solved and accounting procedures and funding arrangenents were promulgated. The problem in connection with high altitude cloud sampling aircraft has already been mentioned in the discussion of Task Group 7.1 planning. This, of course, was a matter of major concern to the Air Force Task Group and research and planning had to be initiated with reference to the requirements of Task Group 7.1. The ca~ pabilities of the B+47, the B-57, the B-36 Featherweight, the B-60, and the Canberra (the English version of the B-57) were investigated. At this time, the B-57 seemed to be the most impressive in fulfil~ ling the criteria established by the scientists; but this aircraft would not be available in sufficient numbers for many months. Even~ tually a firm decision to use the F-84G's and. B-36's was made, but with the possibility that the B-57 could be employed in the latter phases of the test. - Other problems arising before July, 1953, were construction