What was one of the outcomes of the Korean War for the USAF?

The establishment of a demilitarized zone (DMZ) along the 38th parallel between North and South Korea is indeed one of the significant outcomes of the Korean War. The DMZ was created to serve as a buffer zone to prevent further military clashes between the two Koreas. This territorial arrangement underscores the war's legacy of ongoing division and the geopolitical tensions that followed.

While other options relate to the broader implications of the war for military operations—such as the introduction of new aircraft models and the development of aerial combat tactics—these were more immediate responses to the conflict rather than direct outcomes like the establishment of the DMZ. Increased recruitment of personnel could be observed as a reaction to war demands, but the existence of the DMZ is a concrete result that redefined the geopolitical landscape in the region.