I just rewatched the series finale/ep 13 & noticed here was a brief cameo by someone playing 'Charles Lindbergh' however I wonder now if that was just an actor, or a real life retired NASA Astronaut playing an elder Lindbergh? Anyone know? I'm just curious.
shareIMDB does not, for some reason, list the part in the cast list. An online search reveals that a bunch of other sites identify the person playing him as Christopher Jenkins Holmes, who apparently is an actor, and neither a former astronaut nor really old enough that he'd likely be a retired one.
Given the relatively low profile of the actor, I think I'd call that a "small part" rather than "cameo."