Also, for the first time, the B-29 encountered the Jet stream, which was a high-speed wind coming out of the west at speeds as high as 200 mph at precisely the altitudes at which the bombers were operating.
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At the time the runway was unusable due to heavy bombardment during 1944 and 1945 by the USAAF XXI Bomber Command B-29 Superfortress bombers which heavily damaged the Tachikawa Aircraft manufacturing facilities, of which the airfield was a part of prior to the occupation.
On 12 October 1944 the first B-29 Joltin Josie The Pacific Pioneer piloted by Brigadier General Haywood S. Hansell commanding General of XXI Bomber Command and copiloted by Major Jack J Catton of the 873d Bombardment Squadron arrived at Isely Field.