im PRIVACY ACT MATERIAL RE MOVE? until making visual contact with the B-36 control aircraft and orbited until the detonation after which they climbed as high as possible and reported height and intensity of the cloud, The control aircraft directed them into portions of the cloud for samples, When they had finished, the two "sniffers" flew back to the B-29 control aircraft for refueling before flying to Kwajalein, The F-84G samplers formed three flights of four aircraft each, named Red, White and Blue, The Red flight arrived in the sampling area 90 minutes afterdetmation and rendezvoused with the control B-29 at 0,000 feet altitude. They were refueled atthe intermediate refueling station, over the control destroyer; after which the B-36 sampler control directed them in sampling. The four aircraft of White flight took off three hours after detonation and proceeded to their missions without incident. The Blue flight took off four and one-half hours after detonation and took samples. Upon request of Dr. Plank, Blue 3 and Blue ) aircraft were held in the sampling area for additional penetrations, Consequently, the two aircraft were in the air one and one-half hours longer than planned,’ The bottom of the mushroom head was at approximately 55,000 feet altitude, according to the previous report of the two "sniffer" pilots, which meant the F-8G could not gain enough altitude to sample it. __ commander, led Red flight. Sampler Element He climbed to 42,000 feet, the maximum altitude for the F-8LG aircraft, and was directed by Dr, Plank to 70 APM HO SWEH-2-0034 fA “Fn