PRIVACY ACT MATERIAL REMOVED anc +he USS Ainsworth steamed into Eniwetok lagoon and on 2 March 1954 unloaded all the personnel and the aven (7) H-19 Helicopters of Detachment #1. All these personnel had been subjected to radiation; hewever, only a few were equipped with film badges and the dosage of tho majority of these personnel remains unknown. The radiation was received because the two (2) ships, which were steaming at sea after the shot, accidentally encountered an area of heavy radiation fall-out, In view of vhe r*.ston of the helicopter detachment, it was unfortunate that these personnel received unnecessary radiation while aboard the ship, since this reduced the allowable dosage which the pilots could accept during the subsequent phascs of the operation. On 5 March 1954, it was decided that Detachmert #1 wouid not cetrrn to Site TARE but would be integrated into the Tess Sipport Unit organization at FRED, This decision was reached due to the contami- nation of Site TARE and the decision that all helicopter operations at Bikini could be handled by the Marine helicopters opernting from the USS Beiroko, On the afternoon of 3 March 1954, an H-19 aircraft, attemptirg to tax. between cnother H-19 and an SA-16, struck the tail of the S/-16 with one (1) rotor blade causing damge to the SA-*6 rnd the rotor bladc. oireratt was operated by The ; who Was preparing to take off and therefore was a minor aircraft accident. It, is belioved that the major cause factor of tho accident was carclessness on the part of the pilot, coupled with a failure to appreciate the extremely c-ovded condi- tions existing at FRED, there was plenty This pilot had been stationed at Bikin’ whore of operating space and apparently failed +o realize the eum 22/3