CHAPTER 9 SUMMARY OF U.S. MARINE CORPS PARTICIPATION IN CASTLE TASK GROUP 7.1 (SCIENTIFIC) One Marine noncommissioned officer from the Second Battalion, 6th Marines, Camp LeJeune, North Carolina, was badged with TG 7.1 but his activity has not been identified. He was probably with TU 7 had worked in this area during the 1952 IVY series. (Radsafe), as he Exposures are shown in Table 88. TASK GROUP 7.3 (NAVY) Most Marine Corps participation was in TG 7.3. HMR-362. This helicopter transport squadron, initially equipped with twelve HRS-2 helicopters, provided ship-to-shore and other airlift services at Bikini. This squadron was based on the USS Bairoko after BRAVO, having been shore-based at Eneu before shot operations began. Operational statistics are summarized in Table 89. USS Curtiss. A 63-man Marine contingent was part of the ship's company. Exposures are presented in Table 88. The Curtiss served as the weapon element of the task group, and providing guards was undoubtedly an inmportant Marine Corps function. 397