The Hiroshima shadows.

[Gawdzilla Sama]

But my specialization is the opening and closing moves of the US participation in WWII, so I'm not even breaking a sweat.

It's a fascinating topic. There was a lot more going on than just Pearl Harbor and the nukes.

Yep. And the Op-20-G and S.I.S. work at the beginning and end are well worth reading. I've put a bit of it online. The original thing that got me going, back in 1965, was the Hearings. I read all forty volumes before I joined the Navy.