
Factual error: The airline boarding pass from Melbourne, Australia to Zurich shows the code MLB, instead of the correct code MEL. The code MLB is for Melbourne Orlando International Airport in Florida. (00:58:40)

Starring: James Spader, Ryan Eggold, Diego Klattenhoff, Megan Boone

Factual error: The airline boarding pass from Melbourne, Australia to Zurich shows the code MLB, instead of the correct code MEL. The code MLB is for Melbourne Orlando International Airport in Florida. (00:58:40)
Factual error: The bomb is supposed to go off at the "DC Zoo", but the scene takes place at the National Botanical Garden, on the complete opposite side of DC from where the Smithsonian National Zoo actually is.
Trivia: Red's trademark fedora was James Spader's idea.
Question: At the beginning of the final segment, the American Flag is flying upside down outside the beach lodge. Since it is pretty clear that Red would not being trying to elicit support/backup for the deeds that he and his female accomplice were about to undertake, what is the significance of this widely accepted distress signal?