for the islands that were included in the PPG). The United States, how- ever, did not actually own the territory being used, but rather it was held in trust. Furthermore, the territory was remote from the United States and required special supply and security arrangements appropriate to military operations. Finally, the organization for which the weapons were being developed was the U.S. military establishment. The DOD requirements for nuclear weapons were apparently forwarded to the AEC weapons laboratories through the Military Liaison Committee Figure 11). (see The AEC laboratories then designed the devices that were tested at the appropriate proving ground, either the NPG or the PPG. The special location of the PPG required a miltary operation to conduct the tests. The JTF 7 Scientific Director actually directed the tests and CJTF 7 enforced his decisions. The joint task force was divided into functional and service-branch oriented units, each of which reported to CJTF 7 through separate task group commanders. Task Group 7.1 (Scientific) TG 7.1 was the centerpiece of the operation. It contained representa- tives of the organizations providing the devices and the representatives of the DOD laboratory organizations interested in the effects of the devices. All the other groups at the PPG were there to assist TG 7.1. TG 7.1 was primarily led by LASL. The newer laboratory, UCRL, did Provide one test device in CASTLE and a large contingent of personnel, but most of the key positions in TG 7.1 were held by LASL personnel. There was a “Deputy for UCRL,” a position that recognized both the new laboratory and its junior position. The task group was organized into task units with special functions. There were 12 task units, but they were designated 1 through 15, with no task units corresponding to 5, 10, and ll. TASK UNIT 1 -- LASL PROGRAMS. The function of this unit was to make diagnostic measurements of the LASL-designed nuclear devices. DOD person- nel did participate to a certain extent in this task unit, as further discussed in Chapter 3. TU 1 personnel totaled about 145. 55