[hinckley buzzard]

100 per cent oxygen and under high pressure. By the time the ground crew realized what was happening it was all over.

[Karl Spooner]

What it was like inside the capsule.

http://www.nbcnews.com/id/16797157/ns/technology_and_science-space/t/apollo-s-tale-retold-fire-cockpit/#.WIrTu2czWV0