第21爆撃集団
On October 12, 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. By November 22, over 100 B-29s were at Isely. The XXI Bomber Command was assigned the task of destroying the aircraft industry of Japan in a series of high-altitude, daylight precision attacks.