VIII radiological safety, logistics, security and intelligence, information services and funding.? With very minor changes, the Operation Plan became the Operation Order 1-57 on 1 May 1957." Aircraft Requirements The Operations Directorate, 950th Test Group (Nuclear), on 18 February 1957, drew up a list of aircraft for Operation PLUMBBOB, They included 29 test aircraft, 3 support aircraft, and an unspecified number of some 1 different types of aircraft for operations and training. The test aircraft number, types » and missions, all to operate from Indian Springs Air Force Base, were listed as follows: TYPE NUMBER F-84G 11 B-57 MISSION Sampling 6 Sampling F-89 2 Effects studies Helicopters 2 F-89 2 Fou ALD Blimps 2 2 2 MB-1 delivery Effects studies Effects studies Effects studies Effects studies The number of aircraft for support activities, their types, and missions were as follows: TYPE NUMEER Be29/B-50 Be2S._ T-33 (Air National C7 C=47 C-h7 C-119 B-25 CHS L-20 H-21 Guard) MISSION 2 2 Cloud tracking Cloud tracking h 1 1 h Sampling Photography Radio relay Courier flights 5 Security sweeps 4 2 3 6 165 Airlift Courier flights Security sweeps Radiological surveys Sample recovery Damage surveys SWEH-2-0034 AFWL/HO 4 nye