The April 1942 reorganisation that established the Southwest Pacific Area reduced the United States Army Forces in Australia to a supply and administrative organisation that would soon be renamed the Services of Supply. Brett instead became commander of Allied Air Forces, Southwest Pacific Area, with his headquarters in Melbourne. One of MacArthur's first orders to Brett was for a bombing mission to the Philippines, an order which was delivered personally by MacArthur's chief of staff, Major General Richard K. Sutherland. Brett protested that his planes were worn out, his men were tired, losses might be high, and the Philippines were lost anyway. Sutherland told him the MacArthur wanted the mission carried out. Brett delegated it to Brigadier General Ralph Royce, who led the mission in person. Brett awarded Royce the Distinguished Service Cross. Henceforth, communications with Sutherland would be handled by Brett's chief of staff, Air Vice Marshal William Bostock. MacArthur personally wrote a reprimand to Brett. Further disagreements between MacArthur and Brett followed. On 6 July 1942 Marshall radioed MacArthur to offer him Major General George Kenney or Brigadier General Jimmy Doolittle as a replacement for Brett. MacArthur selected Kenney. Brett returned to the United States in his B-17, "The Swoose", on 4 August 1942. The day before, General MacArthur awarded him the Silver Star "for gallantry in action in air reconnaissance in the combat zone, Southwest Pacific Area, during the months of May, June and July 1942."