 There was a resurgence of interest in it in the 50s and then again in the 70s. There's been a lot of movies made about it. Most of them are quite inaccurate. It's nice entertainment, but they're not very realistic. And again, this particular book is about the one airplane out of the 16 that didn't go to Tokyo and didn't go to China, but purposely went to Russia and why they did it.