Briefings for shot decisions, This particular fimetion alone accounted for a major portion of the Radsafe Officer's time. In general, the sudject astter of the briefings covered not only the primary fimetion of detailed forecasting of fall-out areas, but alse covered many operational problens or plans upon which the radsafe situation had « greater or leseer impict depending upon the wind pattern. aA detailed account of the factors consid- ered during the redsafe portion of the command briefings is presented in Tab G. Briefly, these consisted of the presentation ef the forecast and the observed hodographs relative to the development of the wind patterna during representative intervals prior to the briefings, the surface RADEE for H to H plus 6 hours, the forecast outlook for various critical atolls in, and con= tiguous to, the test area, and the outlocks for task force ships, transient ships, air routos and surface routes. The presentation also included infor mation recommended for the task force ccamander's routine advisories to CINCP\CFLYrelative to the mutual Task Porce ind CINCP.CFLT responsibilities for populated areas in the Pacific end protection of sir ind surface shipping. As anormal rule, a full briefing as outlined above was given xt approxtmately H minus 18 hours and H minus 6 hours. Abbreviated versions, consis ting primarily of the forecast and ovserved hodogr~phs, were n-rmally given at approximately H minus 36 hours, at H minus 12 hours and at appreximstely H minus 3 hours. d. The secondary fimetion of the Radsafe OFFICE, to maintain displays for briefing and record purposes, required an assembly of suitable charts of such a sise to allow complete mobility. the displays was a critical feature. On the command ship, for ex-mple, briefings were held st some distince from the space alloted to the Radsafe 75 + nay ‘ The mobility feature of