In article ,
says...
Too bad the DynaSoar was never finished .. he would have that one on the
list !

If X-20 had flown, we might not remember Armstrong today. If he stayed
with DynaSoar, he would have missed Gemini-8, so wouldn't have been
assigned to an early Apollo lunar mission.
--
Kevin Willoughby lid

Imagine that, a FROG ON-OFF switch, hardly the work
for test pilots. -- Mike Collins