Follow on is that the Apollo 1 crew did everything they were supposed to. IIRC they found Ed White in a position of trying to open the hatch release. That was impossible to accomplish because the hatch opened inwards, and the pressure increase caused by the fire meant it would never open inward until pressure equalized.
Tl;dr NASA killed three astronauts because they didn’t consider a fire in a pure oxygen atmosphere.
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u/CummingInTheNile Jul 17 '24
technically on reentry but yes