.
When the
Collings Foundation visited Fox Field here with a B-24, B-17 and B-25, a buncha us early risers got to pull the props thru on the B-17 for its flight to Mohave, early in the morning.. The crew chief bitched about our fingerprints on his finely polished props...

And when the Shuttle Columbia landed at Edwards after its first space flight, we were there to weigh it. NASA said..."Don't touch it!!"... Yeah, like a life-long aviation nut isn't going to touch the first spaceship to land on this planet! PLUNK! that's MY hand print right there!