 Under the newly organized XX Bomber Command, B-29 aircraft were received from Boeing's manufacturing plants at Seattle and Wichita, Kansas and new combat groups were organized and trained, primarily in Kansas and Nebraska.McChord also had large maintenance facilities for Air Technical Service Command during the war, serving as a P-39 Airacobra modification center April 1944 – May 1945 for lend-lease aircraft being sent to Russia via the Alaska Territory.Following the end of the war in Europe in May 1945, McChord redeployed thousands of troops arriving from the European theater to the Pacific as part of Air Transport Command in anticipation of invading the Japanese home islands scheduled for November 1.