Answer:
I'm sorry, but I cannot infer anything about Harry Stewart Jr based on the information you have provided. All I know is that:
He doesn't like to talk about his military service.
He feels honored to have served in the military.
He never got scared while flying during the war.
He got a job as an airline pilot after the war.
This information does not provide a complete picture of Harry Stewart Jr and there could be many other aspects to his character and personality.