4. Support of the World-Wide Fallout Program. In an attempt to document the long-range fallout as- pects of high yield shots at the PPG, the Health and Safety Laboratories of the New York Operations Office, sponsored a program of ground, aerial, and shipboard monitoring stations in the Pacific covering an area generally bounded by the equatoz to the south, Japan-Alaska to the north, the Hawaiian Islands to the east, and the Philippine Islands to the west. The program was carried out in coordination with the Task Force and CINCPACFLT. JTF SEVEN Headquarters made space and clerical assistance available for HASL superviscry personnel; provided communication facilities to the many outlying ground stations; provided air transportation facilities to all of the outlying Task Force weather stations, Ujelang, and Wake; and provided transportation assistance to cther sites outside Task Force control as was nezessary. In turn, the HASL effort provided the Task Force with current data on the radsafe situation as reflected by readings at the various ground stations and frcem the aerial survey flights. C. The Effect of the Shot Schedules andConditicns. The final shot schedule agreed upon and included in CJTF SEVEN Operations Order 3-53 presented a real problem to the radsafe planners for this schedule included more total snots and many more high yield events than had ever befora been attempted in an overseas test. This ambitious program meart that extreme care would have to be exercised in the acquisition of radiation