From another site Hugh Halliday provided the following information.

I can now confirm that John Edmund Russell was an American citizen who enlisted in the RCAF in Montreal, 15 July 1941. He qualified as a pilot at No.4 SFTS, 7 November 1941 and after further training in Canada was posted overseas in June 1942. He was commissioned in the RCAF (12 May 1943) and was discharged from the RCAF (presumably on transfer to American forces) on 10 June 1943.

I can find no connection for W.S. Treacy to the RCAF, and the frequency of names like "R. Wright" in the record makes it difficult to make an RCAF connection.