[Calvin Locke]

Never heard the one about the SR-71. Supposedly, the metalurgy recipe for the Blackbird's J58 engine was lost,
as well as the one for battleship armor (and the capability to roll the thickness as a matter of progress and economics).

SecDef Cheney did require the F14 tooling destroyed. Now that was a stroke of genius. Clinton couldn't let that stuff be
sold to foreign adversaries for campaign/library contributions....

[SunkenCiv]

There was a proposal for a Mach-3 craft to be developed from the SR-71 design, I think for a bomber, but I'm not sure; LBJ really, really didn't want that to happen, probably because he figured that the design would be stolen by spies and traitors and lead to the USSR's building a kajillion of them while the US was squandering lives and treasure on Johnson's war.