I wonder if it was just a coincidence that Oswald was closest to the camera in the photo we've all seen of him at the shooting range, or if they wanted to highlight him because he was a particularly good shot or had particularly good form?
I went through USAF basic training in the early seventies. They gave each of us in our squadron a souvenir book with some photos, etc in it as we were leaving basic training. I was surprised to see myself closest to the camera as we were getting our haircuts. I wasn’t even aware of any photos being taken at the time. I am pretty sure that both instances were just coincidental.