From the Nikkor - The Thousand and One Nights Collection's 13th night (ostensibly about the <New> Reflex-Nikkor 500mm F8, which I may have recently purchased on eBay) at Nikon.com:

We used to call Mr. TSUNASHIMA with affinity and respect "Boss, TSUNASHIMA". Certainly, he was a big-brother type person and took thought for younger men. His dynamic manner did not limit to work-related things. Mr. TSUNASHIMA, who would play tennis for years, was a hard drinker equal to Mr. MORI, introduced in Tale Nine. Let me introduce you an episode of "Boss, TSUNASHIMA" at a drinking party.

It was about my freshman's time. At a drinking party on a company trip, several people (hard drinkers) of us were sitting in a circle and drinking sake (Japanese rice wine). Sake bottles were rapidly emptied one after another. The party really came alive and people's laughing voice and cheers echoed. Finally, all the sake bottles were emptied. So, Boss, TSUNASHIMA gave a cry to me, one of organizers, "Hey, SATO! Sake is empty." So I said, "Yes, sir," and brought several bottles of beer. Then, Boss, TSUNASHIMA exclaimed, "Hey, SATO! Is this really sake ?" I replied, "Well ?" Boss, TSUNASHIMA suggested, "Well, this is an alcoholic beverage called BEER, isn't it ?" So I knew that after all, a heavy drinker was different. The scales dropped from my eyes. I realized that I could not join in the party unless understanding their delicate manner and feelings.

That's, um, unexpected.

I've always thought reflex lenses were interesting, but always read about their poor image quality and small aperture, meaning you couldn't take very quick pictures in low light, so I never really gave them a serious thought.

But after buying a used, manual focus 300mm f/4.5 lens years ago and really enjoying using it on my D40, I've been a little less adverse about putting really old lenses on really new cameras.

I've got a few pictures on Wikipedia that I took during NFL games years ago, and kinda missed having my camera with me when I went to a game last week. But the rules have changed, and my old 80-200mm technically shouldn't be allowed in any more, since it's over the new rule of a max length of 5" on detachable lenses.

You can probably see where this is going. How can I get an ultratelephoto lens into an NFL game? Well, you get a 500mm reflex mirror lens that's 109mm long (so 4.3") to a bright arena without much in the way of shadows, and see what you've got.

We'll see how good of a specimen I bought when it arrives, and I'm a little worried about how narrow the depth of field is, but that does seem to go with the wide-open telephoto territory. I think the extra ISO digital allows will more than make up for the loss of one stop of maximum aperture.

Will be fun to give it a shot in any event. Don't know that I'll have much to report about sake or BEER, however, other than my absolute horror at how many $18 cans people around me seem to be downing. Seriously, dropping $50 to buy your best friends a round seems, um, a little steep.

And a little more context on why Mr. Tsunashima factored into what amounts to a blog on the history of Nikon's reflex lenses:

The optical system was designed by Mr. TSUNASHIMA, Teruyoshi of 1st Optical Section, Optical Designing Department (then). Mr. TSUNASHIMA ranked with Mr. MORI, Ikuo, introduced in Tale Nine, and Mr. SHIMIZU, Yoshiyuki, introduced in Tale Five, was one of the designers who built up the golden age of old Nikkor lenses.

He completed optical design of Reflex-Nikkor 500mm f/8 (New) in August 1982 and, later, obtained patent right both in U. S. and Japan.

Waiting until the time was ripe, the lens was on sale in spring of 1984, when trees put out leaves. The specifications of the lens, being light and compact and having amazingly short closest focusing distance of 1.5m, got publicity and accelerated the Reflex-lens boom of those days.

...

In other words, Mr. TSUNASHIMA designed the Reflex-lens in person, struggled to produce it in large quantities, and strictly controlled its quality by himself to put it on sale. Consequently, Mr. TSUNASHIMA participated in the own designed lens up to a stage just before shipment, which was the nearest stage to users.

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