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davidcyclebackNot NASA, but my dad knew a theoretical physicist who was part of Los Alamos atomic bomb testing and had some interesting stories (google : Hirschfelder atom bomb). As they’d never detonated a atomcic bomb before, a worry was that the bomb might ignite the ozone. After the blast, he tested the ground around the blast site. When a military jeep came to pick him up, they did a Geiger measurement of him. The measurement was so high they refused to let him in the jeep and he had to walk back the several miles behind the jeep. He lived many happy years after, but even as an old man the skin on his face would peal similar to as if he had a sunburn.