12 A supplement to the draft of the book message set forth Air Force policies concerning Air Force funding support of Task Group 7.4. This supplement defined funds, and sources of funds, under the two major cate~ gories, Normal Operating Expenses and Extra Expenses. Normal Operating Expenses "will be provided by the Service concerned," and included such expenses as pay and allowances of personnel, personnel subsistence, cer= tain travel and transportation costs, and eosts for standard equipment and supplies. Extra Expenses "will be financed with funds made available to the Task Force Commander," and included such expenses aa equipment and aircraft modification costs, Test Site Construction costs, and costs of equipment required by the task force and not normally stocked or standard to the services. Aircraft Requirements. At the HARDTACK conference at Headquarters Joint Task Force SEVEN on 20 February 1957, a major item of discussion was that concerning aircraft requirements. A preliminary list, contain- ing approximately 62 aircreft, was compiled. 20 The list included 10 WB-50 aircraft to be used for weather reconnaissance, A possibility existed that this number was insufficient in view of the proposed use of the two-atoll (dual shot) concept. Should further study justify the need for additional aircraft a supplement request-would be submitted to United States Air Force. Three C—54 aircraft were tentatively planned for documentary hr AFWL/ HQ

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