xII your headquarters in the allocation of these atreraft,* First hint that the B-57D would be made available at a certain specified time appeared in an indorsement to the Commander, 950th Test Group (Nuclear), dated 27 September 1956, Forecast was for arrival of the craft during early fall 1957," A hint of planning for insufficient numbers of B-57 was dropped on 14 December 1956, Colonel A, W. Carney, Deputy Chief of Staff, Operations, for the Air Force Special Weapons Center, on that date appealed to Mr. James E. Reeves, Director Test Division, Atomic Energy Commission, for the planned testing program, stating that it was the Center commander's concern that his- unit would be unable to perform the sampling required by the Atomic Energy. Commission.!? Colonel Carney made an up-to-date repeat of the review to obtain action on the B-57D requests late in 1956. "It is also to advise you that unless decisive action can be taken to provide a minimm of three (3) RB-S7D-2 aircraft to AFSWC by not later than 1 November 1957, the Atomic Energy Commission requirements for HARDTACK cannot be fulfilled.” In his summary, Colonel Carney sent copies of 11 documents as well as 8 separately discussed arguments for early approval and delivery of the p-s7p, Without making any direct request for B-57D aircraft the University of California Radiation Laboratory got into the act by defining requirements for future cloud samplers. On 18 December 1956, that agency, represented by Dr. Roger E. Batzel, Assistant Chemistry Division Leader, wrote to Dr, Gaelen Felt, Commander, 7.1, Los Alamos Scientific Laboratory, through Rear Admiral Byron H. Hanlon, Commander, Joint Task Force SEVEN, that 253 AFWLHO SWEH-2-003); yo & . 724: