§-E-C REET a 92,000 foot balloon firing of a 2 KT device; and 2 underwater “shots of 8-10 KE devices (similar to depth charges) in target arrays. 4. A HARDTACK program of 31 shots would compare to the 17 shots of REDWING, ‘The total HARDTACK yield ofabout 80. “megatons would beexpected to produce 16 megatons of fission yield, as compared with 20.6 megatons of total and 8.5 megatons. of fission yield produced in REDWING, and 47.8 megatons of total and 31.4 megatons of fission yield in CASTLE, The world-wide fallout produced by HARDTACK probably will exceed that produced by REDWING. 5, Taongi is an uninhabited atoll 285 miles northeast of Bikini and 324 miles south-southeast of Wake. It is ideally located from the standpoint of distance and direction in relation to populated lands of the Marshall Islands and the southern boundary of the danger area, so as to be a safer place to fire high yield shots than either Bikini or Eniwetok. The firing of large shots will be appreciably easier at Taongil: it is estimated on the basis of a study by the JTF SEVEN Meteorological Center that the ratio of safe firing situations at Taongi as compared to Bikini might be as high as 3 to l. 6. Taongi could be used only as a barge site. All diag- nostics and firing could be accomplished from a specially outfitted and instrumented ship. Devices would be prepared and loaded on barges in the assembly area at Bikini, ferried by LSD to Taongi, anchored in the lagoon and fired. With no instrumen- tation stations or other facilities ashore, there would be no need for evacuation, re-entry and recovery operations as is now | : gah)