On all the atteapts to shoot, edvanse preparations ineluded the fleet going to sea in the evening of ainus me Gy. Althvags is sone instances for operetionnal reasons, 18 we desiredle this wouldpet have bees nae froa, the viewpadat of flushing the shipe with non-contamimited water. Subse=~ quents.t@ BRAVO; Lagoon operations were eush that water in~take points and evaporatere could be maintained at a fairly constant and roasonsble levalvef activity By cold water treatment; however, intonsities slowly ruse in eslt wator pipe fittings and hends. Flushing the ships salt water systeas in ths open sea waa of considerable aid in mintaining acceptable levels at suck places. Vo activity was detected in the continual analysis of fresh mter supplies past the evaporators. (Ses Tab J for’ further detaile ralitive to ship operation in contaain:ted lagoon waters.) On the morning of 26 Jareh a favorcble forecast of H-Hour winds for the following day set in action the entire pre-enct schedule of cvents sg:in. This forvesst lies te abouts gave eiat~northeast wiads te opproximtely 8,000 fuet, scuther= 12,000, southeastorlics to 20,000, seutherlies to southwcster= lies to 55,000 and east southeasteriies to easterlies xhove 55,000 feet. All units and external igencise wore notified accordingly that ROMEO schcdule wos firm for 2706304 . , Following the noon Comacnd Brisfings, CINCPACFLT was advised of the forecast. 72-hour air particle trajectories for ten, thirty, forty snd fifty thousand foct. Purther, the advisory st:tod that no significant fall-out was foreeast for populated Lisrshall Atolls and recacmended no closure of air routes. It included a statement that no surfoes he-lth hasard prohlens were forecost outside ,ros GREEN and that sn intensive search was deing conducted in this area & 240 WM wide sector out to 600 NE centered. on true bearing 340°. (The sector soareh was schedulcd and run again post-' shot centered on 305° True from 220 MX to 600 NM from GZ. Starting at He2 houre four soareh aircraft were used on pirallel flight tracks, 60 Nii coverege por aircraft, in advance of tho cloud.) In addition, CIMCPACFIT was roquosted to divert all shipping from the sector area GZ, 260° clock- wise tc 90° True to 450 MI. ping wae in this ares. A statoment was included thst no imcwn ehip= At about 100M a special advisory was issued to the Sritish Sampling Unit on Kwajalein, including the forecast air particle trajectories and the forecast GZ Heliour winds. The British Unit was informed that authority to penetrate the Danger Area would be given later in the scragble and routing instructions to be isaued by CTG 7.4 approximately H plus 34 hours. The British Unit wag directed to file its flight plan through the Kwejalein Liaison Officer using this advisory as authority for ROMEO flights. at approximatcly LSOQ! the surface and air RADEXES were issued as follows ' Surface RADEX: True boarings from GZ 240° clockwise to 50° radial distance 90 Ni for H to H plus 6 hours, plus a cim cular HADEX around GZ of 25 Nil radius. It waa recom amended that tha Control DDE move to true bearing 250° and 90 NM from GZ. Le3