We are a commune of inquiring, skeptical, politically centrist, capitalist, anglophile, traditionalist New England Yankee humans, humanoids, and animals with many interests beyond and above politics. Each of us has had a high-school education (or GED), but all had ADD so didn't pay attention very well, especially the dogs. Each one of us does "try my best to be just like I am," and none of us enjoys working for others, including for Maggie, from whom we receive neither a nickel nor a dime. Freedom from nags, cranks, government, do-gooders, control-freaks and idiots is all that we ask for.
I've always wondered if pilots are trained for one aircraft, or for several. It seems like a pilot could learn to fly at least three or four different machines. For example, you could start him off with a Cessna 182, so he can do touch and go landings. And then move him to a SR 71 Blackhawk, for Mach five maneuvers.
Yes and no.
Pilots are trained initially to pilot light single engine aircraft. Those aircraft do not generally require enough type specific knowledge to need more than a short familiarisation flight with someone experienced in the type to be able to fly them safely.
For more complex types, like most military types, airliners, business jets, etc. etc., rigorous type specific training tends to be required to give that same level of basic competency to handle them safely.
Also, if you don't fly a specific aircraft for a while you "lose your edge" as it were, and need at least some retraining.
For that reason most pilots aren't trained on more than 1-2 specific types. Which doesn't mean they can't also fly a Cessna 172 and a Piper Pa-38 as competently as those are light aircraft.
In the specific case you mention, the pilot would have the specific type rating for the SR-71 Blackbird, which he'd be flying for maybe a few hours a month (as those birds didn't fly a lot at all) and would spend the rest of the month zooming around in other aircraft like that Cessna and maybe a modified Gulfstream or Citation set up to be a facsimile of the SR-71 cockpit and low speed handling characteristics in order to hone and maintain his skills at flying that type (remember that the SR-71 predates the large scale use of simulators for that).