This man was a ground crew at No. 4 EFTS Windsor Mills.
No. 4 EFTS Windsor Mills was in fact located at St-François-Xavier, a small town north-west of Sherbrooke, Quebec.
He is posing in front of a Tiger Moth. This picture was sent last week by a contributor. He identified the man as Yvon Goudreau.
Mario Hains also contributed this picture.
These I found on the Internet.