The SR-71 WAS officially designated the RS-71 (for reconnaissance/surveillance) but President Kennedy misspoke it when he revealed its existence; they then changed the designation. It came out of the Lockheed Skunkworks program.
I worked right on the flight line in the terminal at Kadena in 1970/71 and watched Habus take off and land all the time. They did leak fuel on the ground but their takeoffs (and landings) were amazing.
You’d see it barrel off on takeoff and it was gone from sight in a minute or less and landing was one very high altitude single 360 degree drop to the runway. All of them headed to or coming from west over China, I guessed. We ran a secure data link to them from the tech control I worked in.
Always heard it was LBJ that did this, not JFK.