When you work for a company in which you are a Defense Department contractor and are called upon for research and development testing, you get to know everyone in the business and eventually you get asked your opinion on things.
I test hardware for many companies on the side.
As for John, I confess I pulled a few strings and got one shipped in from Taiwan last month as a surprise for him.
Stay in school. Master Degrees are a dime a dozen now-a-days. Specialize and get your PhD, and also make sure you include a business degree in the mix somewhere.
After a few successful years, you will get your arse kissed by everyone

I started out in the Air Force and was grounded from any combat flight because late in the game I found out I could not handle mach or wild maneuvers. Instead of becoming an air 'fuel truck' driver I convinced them to continue my engineering education and ended up at McDonnell Douglas back in the 60's playing with top secret toys. I became involved with the US Department of Defense and it was all down hill from there.
I even had a number of years where I did on the side consulting work in the TV and motion picture industry as an advisor for action and sci-fi films.