Trained officers were also left idle, as the plan to shift African-American officers into command slots stalled, and white officers not only continued to hold command, but were joined by additional white officers assigned to the post. One rationale behind the non-assignment of trained African-American officers was stated by the commanding officer of the Army Air Forces, General Henry "Hap" Arnold: "Negro pilots cannot be used in our present Air Corps units since this would result in Negro officers serving over white enlisted men creating an impossible social situation."