Neil Armstrong, RIP.
I was four when you went where no man had gone before on Apollo 11. You were certainly in the “hero” category through my young life. That is, I’m not sure I knew what the word ‘hero’ meant, but I definitely knew that you were one. Now that I know what the word means, you are definitely there. An engineer, a scientist, an explorer, an adventurer; you went beyond the realm of your existence and life, braved serious dangers, and returned home, bringing with you new knowledge for everyone about who they were and of what they were capable.
That’s the definition of a hero.