TAB A BLACKFOOT EVENT OPERATION REDWING 1. BLACKFOOT device was fired at 0626M, 12 June 1956 on a 200- fc ot tower lecated on the northern tip of RUNIT Ieland (YVONNE) of CATES57, 2. The fallout forecast for BLACKFOOT was based on an expected Sian The forecast indicated a light fallout pattern ~ a: tending wéstward across the ENDJETOK Lagoon, , The forecast was verifie a ‘x the post-shot radiological surveys. 3. The initial cloud moved to the West. Cloud tracking aircraft <tports verified the forecast cloud movement, l. DNA Based on the results of initial radiological survey of the cioll, reentry hour was announced as 0830M, 12 June 1956, 5. Monitoring stations and aerial surveys showed no detectable in- siease in activity at other than the ENIWETOK Lagoon area. ,