https://m.youtube.com/watch?v=mnOLUnExHvw&t=1m42s
[0] https://viewfromthewing.com/delta-rarely-interacts-with-cust...
https://m.youtube.com/watch?v=mnOLUnExHvw&t=1m42s
[0] https://viewfromthewing.com/delta-rarely-interacts-with-cust...