This could be a picture of Lyn Madden on this Webpage.
With the information Dean Black just provided, it has to be him on that group picture, third from the left.
I have Wally Conrad’s diary from that era (mid-1943. Wally served on 403 at the time.
Why is this important?
Because in his diary he complains about getting too many F/Lts former instructors from 416 with no combat experience and Madden seems to fit that description.