Tragic that that was then and this is now - NASA reaching out to islam per 0bama ....
Not having researched it, I'd still hazard to guess that following the attainment of the moon goal and the scuttling of Apollo, most of those young engineers, etc got the hell outta Dodge.
Fortunately, FR's roster used to include some old seasoned missileers who might hopefully stop by and disabuse me of that notion if it's in error.
Doubtless some stayed on to work on the shuttle etc, but early NASA ought perhaps be viewed as an entirely separate, temporary entity .. Tranquility Base via subcontractors, as it were.