As a precaution to help prevent decompression sickness (the bends) U-2 spy plane pilots need to breathe pure oxygen for an hour before flying to purge nitrogen from their bodies.

#science #sciencefacts #u2plane #thebends #oxygen #nitrogen

A really interesting story from the Cold War.

#coldwar #china #taiwan #usa #u2plane #spy

https://www.cnn.com/2023/03/10/asia/china-us-taiwan-spy-plane-squadron-history-intl-hnk-ml/index.html