More options...
How about if no one but YOU knew that you were the culprit.
How bout if your wife is a judge....
Was the guy you shot down a "made man" ?
Was the flyer a priest or rabbi ?
Was the flyer an orphan or widow?
Was the flyer you shot down making a play for your wife?
Was he an arrogant sob that shot down 5 planes himself and didn't own up ?
The world's not black and white ya' know