Wi-29_"GHTS “Le Participation: ALL shots, ~ _% Durston! ment for a 36 LZenour coverage starting at H hour with a requirce of one aircraft to ba on station at any onc tim. % #1 through #1, as fo t Four twelve-hour periods are designated Flights g a. Flight #1 (H to plus 12 hours). This flight is to deter. ming in sequence the characteristics of the radiclogical hasard likely to drift and fall cut om Eniwotok or Ujolang Atalls and the hasard upwind from the shot atoll, The first portion of the flight will consist essentially of @ 10,000=foot racetrack holding pattern of approximately five hours duretion and extending 70 nautical milos from north to south, The H hour position of the castorn edge of the pattern will be at 50 nautical miles west of ground sero. Upon encountering radiation, the ontire pattern ts to be shifted westward to follow the leading edge of the radiation ficld. The search upwind from the shot atoll will bo made in a 30 degree sector with apex on ground sero amd centared om tho average prevailing easterlies. "EZ" type search pattern at 10,000 feet will be employed, Specific instructions for this mission will be forwarded by CJTF SEVEN to CTG 7.4, ATTN: Commander, Tost Servicos Unit, not lator than H minus @ hours. be Plight #2 (W plus 12 hours to H plus 24 hours). ‘This flight is to dotermine the characteristics of the radiological hasard cxisting upwind from the native populated atolls in tho scutheast quadrant and the hasards existing on, or near, air routes of interest to comands external to the task foree arca of responsibility, Upwind for the native populated atolls is defined as a 30 degree scctor (as in Flight #1) with apex on aongerik Atoll. "“E*" type search pattern at 10,000 feet will be employed, Search of air routes is to be at 10,000 feet and along the routes, or through the area forceast to be upwind from suciz routes, for a representa= tive distance determined by the cstimated limits of accuracy of the Air RADEX, The attempt here will be to determine the contamination status of the air on the routes or the potontial hasards likely to drift zcross the routes. The air routes of interest are those through Waks and thc Marshall Islands, Specifics instructions will be forwarded by CJT? SEVEX to CTG 7.4, ATINe Commander, Test Services Unit, not later than H plus 4 \ ) hour. Oe Flight #3 (H plus 24 to H plus 36 hours). This flight will attonpt to detormine the axtent ami drift of other major segments of the atomic cloud as practicable and as required by existing mtcorclogical influences. Arcas and altitude of scarch are to be specified later and will be contingent upon the above influcnces and the results of Flights #l and #2, Flight #3 will be planned and cxscuted by the operating agcnc; upon directive (issued not later than takonoff minus 8 hours) from CJiF SEVEN.as for Flights #1 and #2. It is expected that this directive wis. indicate a vectored mission, The nocossity for schoduling this flight wi be dotermined by CUTP SEVEN on tho basis of the results of Flignts #1 and #2 ard other sources of information, 2 a &