523/729.3 SUBJECT: ll Deceaber 1953 Safety Ucasures During Operaticnal Phage of C..STLE to inhabited Lelands and air and surface routes of the Pacific. Dur ing the pre-ehot and post-ahct phases, CJTF SEVEN will advise CINCP:.C “of any unforeseen hasards, which aay develop during the operations, and will recomnond appropriate precautions by dispatch of advisory mes sages as indicated in reference 1b. e. air and surface routes through Take and the Marshall Ia- lands may be effected for shost pericds cf time. Pertinent information supporting acticn relative ta closing and opening such routes will be included in advisories to your heedquartere (reference lb). d. Reconnaissance flights by security afreraft of TC 7.3 to clear itinerant shipping from the predicted cloud passage area up to 600 miles on shot aoinus 1 to 2 days will be cunducted in the significant fallout quadrant. 3- In the interest of aininizing hasards in arcas and units other than those assigned to JTF SEVEN, it is recomasnded that the fclicwing measures, similar to those inplezented ty CINCPACFL? for Operation IVY, again be taken with facilities at your disposal: a. nirborne survey of significant Pacifie Islands, supplecented by ground checks as practicable, in coopemtion with the Atoais nergy b Pile badge survey of “ake and Johnston Islands (extended to inelude significant native populated atolls). ESTP @. Advance coordination with the C... .dministrator on possible interference with air routes through Yeke and the Marshall [Islands for specified perinds of tine, and arrangements for closing or adifying these routes on ehcrt notice in the event such actiia bco.mes essen= It is also anticipated that, for cpemticnal reasona, both Eniand Biicing air bases will be closed fur short periods befc re and er each detonmaticn. Jppropriate adviscries to your headquarters inelade informaticn supporting these actions. de advance coordination fcr Headquarters, USAF (:FOAT=1) sup= j of cloud tracking by supplying radivlogical data fron various Pacifi : e separate commumicstica thie support has been requested CIC? .CYLT. << be CINCPICFLT will be informed by separate ccmmmicsation of deails pertinent to the abve infcrmticn. - a/?. W, Clarksca t/P. "le CL.RESON Hao jor Guaeral, U.8. Ccanander way