A. The aircraft used are C~54's, RB-36's anc B-50's, The C-54's havo a benk of caneras leeated at tho cargo cntrance ani fron altituics 6f round 10,000' and a diatance cf about 80 miles, take ball fire am! cloud rise and growth photepraphy. The RB-36 is taking photovraphy fren about 60 riles at 40,000! for a stucy of cloud phenonenclozy. Tho B-50 circraft are taking ralar scope pictures at 15 to 30 niles at 30,000! for study of indirect bomb ‘amare assessment and bese surgecharacteristics, The inforration thus obtained is added to thet photography performed on the ground, Q. A. I nct tho impression fren what you have said that quite a number cf oireraft ore airberno at shot time. How 2c you knew that all of thoi: are where you want thon at shot tinc? Throughout cach shot operation, we cperate apprexinately 40 circroaft. Since the shots ere fired in darkness, obviously we must control cach of then carefully. For this purvose, wo operete two radar control centers, one on lan? at Eniwctok and one aboard a Navy ship at Bikini, och aircraft is breught from Eniwctck to Bikini, is positioned there in his assigned position and is then scent back to Eniwctck umier continucus radar surveillance. Threughcut this process, all airereft are in constant redie ccrmmnicntion with the ecntrcl centers ond threuzh this ccrmunicaticn link roccive their instructions. Q. You tenticned that ycu are responsible for inter an? intra atoll girlift. Are any of these airereft flyinz at shot tinc? = PS . A. No, These are, in the main, helicopters anc smell liaison type caireraft which are used to transport scicntists and construction workers from the carps tc the shot sitcs ami nocsurencnt stetions an? C-47 circraft transporting these sone neople between Eniwetck cond Bilini. Their job is completed the day hefcre the shot an! berins asain theo acy cfter the shct when we begin collccting scicntific ‘ata from the mecsurenent stations cnji initiate work cn the next shct. It would seorn to ue thet weather information would te important in one of these cperctions, Is this sc? Yes, weather is all important. It has becere perhaps the sreatcst sinele factor in the operation. It affects the cbility cf the scicntists te collect data, our ability to teke photecraphs and to ecllcct sauples and, abcve cll, it rctcrmincs where the arcas cf ralicactive foll cut will be. To insure the ccrrectncss of their fcreeast for shot tine, our weathcr people have a tre::cnicus res; onsiility. TAB ND 2 (5).