35 requested from Memphis Air Force Depot, inasmuch as 18 others would be available from Indian Springs Air Force Base upon completion of Operation PLUMBBOB, The total requirement from Zone of Interior stocks for HARDTACK was 122, Runway Arresting Devices. Early planning for runway arresting devices fn the proving ground made provision only for a cross—deck pendant and a barricade at FRED {Eniwetok)., Although an MA-1 barrier was used also at FRED during REDWING, none was planned for HARDTACK because of the absence of aircraft requiring this type of arresting mechanism. The basic hardware for a barricade remained in the proving ground after the completion of™ REDWING, An entry in the Director of Materiel Black Book*’ on 8 August 1957 confirmed that no MA~l barriers would be used during HARDTACK and that the current location of barricade stanchions was satisfactory. The proposed barricade was suitable for arresting B-57, A4D, andWJ4 aircraft, all of which were proposed for the HARDTACK operation. No requirement was declared for barriers or barricade on emergency strips, although barriers had been used at JANET, NAN, and PETER-OBOE during REDWING. A letter4® on 10 September 1957 to Task Group 7,5 stated that the FRED arresting devices for HARDTACK would be located in the same positions as during REDWING: that is, the barricade would be located approximately 100 feet from the northeast end of the existing runway, and the cross-deck y AFWL/ HQ yp f ia

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