trailers would be put on land in three positions and the diagnostics could be turned back in; ships if Johnston Istand were to be used, one or possibly In the event open sea testing is done all two of the ships could be released. ships would be required and since they must be loaded on the West Coast, Ogle suggests that the latest date the ships should be available is |! February on the West Coast. Furthermore, as backup, the presently instrumented C130's and the instrumentation on the drop plane will also be used. Considering the accuracy and reliability, the technical personnel rate the comparative desirability of the several possiblities as: Christmas-very good; Johnston-moderate; and Open Sea-poor. The several diagnostics shots for which air drops are not desirable are as follows for the reasons noted: I. 7 ‘not |. safe - alpha required. If Christmas is available this could be done on a balloon with alpha measurements; without Christmas, a shot ship .is required. 2. . -approximately | Megaton-this experimental device is much to large to airdrop. . 3. PINEX such that ah airdrop is not feasible Gun-this requres telemetry and and a shot ship is required. 4. An LRL vulnerability shot which requires separate balloon sites for vulnerability experiments. The LASL desired ‘a nuetron spectrum as a function of angle measurement is which would benetit from placement on land so that spectrum, vulnerability, and EM effects could be studied. If an island cannot be obtained for this shot, then the data obtained would be compromised and a shot ship would be needed. 6. Spare shot ships are requested so that if there is trouble with some of the above shots or if others become desirable, perhaps two or three spare ships would be available. To address such questions as how to implace diagnostics gear on Liberty Ships or whether there are smaller vessels which are seaworthy but could be used for either shot ships or for diagnostic ships, Ogle requests that the Navy Task Group get together accomplished. immediately with H&N to determine how the aims can be It is noted that since some of the construction may be very time consuming, a ship or more may have to be in the shipyard as early as {| January and thus planning in a coordinated fashion must be done immediately. In discussing the question of preparing for high altitude testing and noting that Don Schuster will provide details on this later, several points are noted. Two ships are noted as possibly being required as intermediate positions for launching instrumentation rockets and they would have to be more stable than the smaller ships discussed, perhaps destroyers. Ogle does not suggest obtaining

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