For a limited time, save 60% on your first 3 months of Audible at http://Audible.com/wendover Watch Extremities at null Buy a Wendover Productions t-shirt: https://standard.tv/collections/wendover-productions/products/wendover-productions-shirt Subscribe to Half as Interesting (The other channel from Wendover Productions): null Youtube: null Instagram: http://Instagram.com/sam.from.wendover Twitter: http://www.Twitter.com/WendoverPro Sponsorship Enquiries: wendover@standard.tv Other emails: sam@wendover.productions Reddit: http://Reddit.com/r/WendoverProductions Writing by Sam Denby Editing by Alexander Williard Animation by Josh Sherrington Sound by Graham Haerther Thumbnail by Simon Buckmaster References: [1] https://americanairlines.gcs-web.com/static-files/ceb67596-d59a-41e3-ad0c-b5556dd43b4a [2] https://ir.united.com/static-files/1c0f0c79-23ca-4fd2-80c1-cf975348bab9 [3] https://www.researchgate.net/publication/257430933_30_years_of_frequent_flyer_programs Select footage courtesy Getty and AP; Select imagery courtesy Geolayers; Select music courtesy Epidemic sound