My dad passed away a few years ago. He worked in defense electronics for 30+ years. It's kind of weird that I know very little of what he actually worked on. I

My dad passed away a few years ago. He worked in defense electronics for 30+ years. It's kind of weird that I know very little of what he actually worked on. I know he did a lot of work on what became GPS and on Tomahawk and F/A-18 projects, but so much of what he worked on will probably always be a mystery to me.