While I was in college, I was extremely lucky to get to know the man who became the only grandfather I've ever known.  An excellent welder and machinist, he taught me a number of things, both while I was working for them at the machine shop and when we were just hanging out.  He was a great man who was always happy to help someone out, and always happy to bend someone's ear with a story.
 
A veteran of World War II with a full and rewarding life both before and after his service as well, he had a great many stories to tell; but one of my favorites was about working on airplanes for the Navy.  He didn't start out as a mechanic for the Navy, but he always had a mind for machines.  And after watching the crews waste gallons and gallons of hydraulic oil (brake fluid) every time they went through a very time consuming process of bleeding the brakes on an airplane, he sneaked into a hangar and figured out a better way of doing things.  
 
After designing and making a tool that could bleed the aircraft's brakes in a short time, while wasting very little brake fluid, he was afraid the crew guys would just take his idea and tell him to shove off.  So he went to the Captain and told him what he had come up with.  Annoyed and skeptical, especially since this kid who jumped the chain of command wasn't even a mechanic, the Captain told him to go see what the NCO over the crews had to say about it.  Of course, he agreed, but respectfully told the Captain that when his tool and method worked, he wanted to be on his airplane mechanics crew.
 
A couple of weeks later, the Captain was walking by the hangars and happened to think about that kid, and asked about what he had said.  The head of the crews confirmed that his idea had indeed made things quicker, easier, and less wasteful; so the Captain kept his word and got the kid sent to training and put on the crew.  So a bit of ingenuity and the guts to put himself forward resulted in aviation mechanics crews around the Navy learning a better way of doing things, and led to him getting to work on some of the newest and biggest equipment in naval aviation.