I grew up a nerdy kid in the 80s that liked military airplanes, and on the island I grew up on, was the HQ and manufacturing facility of a local manufacturer of military aircraft, that at the time was named Grumman. They were like a local source of jobs and pride and prestige of something cool to come from the island (second only to Billy Joel, the most famous celebrity of that era from The Island hahaha.)

Anyhow, when I was about 10, I wrote the CEO of Grumman a letter about how great they were talking nerdy about my favorite planes of theirs. The CEO wrote back with a short message thanking me personally. I was so excited, my parents framed it and put it on the wall of my childhood room, etc etc. Only as an adult, well into my 30s, did I remember that and think "OMG, of course his secretary or PR firm wrote that", but I truly couldn't realize that when I was a kid.