18. Prepare shot-time aircraft positioning plans and coordinate the integration of TG 7.3 aircraft with CTG 7.3. 19. During shot periods, assume overall positioning control of task force aircraft, other than security forces, operating in shot areas. Relay instructions to TG 7.3 test aircraft through CTG 7.3 on the Bai-~ roko. In the event of interception of unidentified aircraft in the shot area, relinquish control in the area to CTG 7.3 for the duration of the defensive effort. 20. Augment CTG 7.2 personnel as necessary to support TG 7.4 at Enewetak Island. 21. Provide decontamination crews and facilities for TG 7.4 aircraft at Enewetak Atoll and assist TG 7.3 in aircraft decontamination as required. 22. Assist TG 7.2 in emergency evacuation of personnel based on Enewetak Island. 23. Support TG 7.1 as directed by CJTF 7. To implement these functions, the task group was organized into three units, the Test Aircraft Unit (TAU), the Test Services Unit (TSU), and the Test Support Unit (TSuU). The function of the TAU was to operate and maintain the aircraft used in support of the TG 7.1 scientific program. The TSU's function was to operate and maintain the aircraft used in support of the test operations, @.g., weather reconnaissance, documentary photography, and search and res- cue, TheTSU also supplied airways communications services and operated the major air facility of the PPG at Enewetak and the airstrip at Bikini. The TSuU's function was to operate and maintain the aircraft used in the Enewetak-Bikini airlift, weather island resupply, and the intra-atoll air~ lift on Enewetak. Figure 15 Personnel strength for TG 7.4 is shown in Table 7. (see Chapter 2, p. 86) illustrates the relationship among the several units. Task Group 7.5 (Base Facilities) TG 7.5 built the scientific stations required by TG 7.1 and the camps and other support facilities required by the task force, except for some 71