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Spared, even. There were more selection criteria, though, and Nagasaki was (IIRC) chosen at the last moment because of the weather.

Kokura was the primary target and three bombing runs were made before diverting to Nagasaki.

Thank you for sharing! I knew Nagasaki was alternate selection, but this is first time I’ve heard three runs were attempted before diverting.

Leading to the concept of the "luck of Kokura" where you avoid a catastrophe without even being aware of it.