As of 26 June 1950 the Eighth Army was just completing battalion-level training. To expedite the mutual phases of this training, the Eighth Army and Fifth Air Force had exchanged liaison officers, and 16 out of 25 battalion tests conducted between March and May had included close-support (CAS) demonstrations under the direction of tactical air-control parties provided by the 620th Aircraft Control and Warning Squadron.
The provisional air-control parties had obtained some
beneficial experience, but for the most part these battalion demonstrations were
"canned" problems, conducted over well-known ranges and lacking realism to the
airmen who flew them. In many instances the lack of adequate bombing and gunnery
ranges convenient to Army posts in populous Japan forced the aircrews to
simulate their supporting strikes.