Hidden material In the scene where the three stowaways are impersonating "the three greatest aviators in the world", Driftwood seems to talk gibberish with the dignitaries. Actually it is English; if played backwards, it can be heard what they are saying ("This man is accusing you of being impostors", etc.). It was recorded normally, then reversed and dubbed over the scene in post-production.
Hidden material In the scene where the three stowaways are impersonating "the three greatest aviators in the world" Driftwood seems to talk gibberish with the dignitaries. Actually it is English; if played backwards, it can be heard what they are saying ("This man is accusing you of being impostors", etc.). It was recorded normally, then reversed and dubbed over the scene in post-production.