Back in the day I bought a couple of Col. Rich Graham's books and found them fascinating. I ended up mailing him an SR-71 print which he graciously signed and returned.
Some time later, out of the blue, my wife answers a telephone call while I was out. "Some guy with an American accent called asking for you, something about a spy plane. It sounded like a prank call, so I put the phone down"
Now, as it happens I am hearing impaired (lip-reader) and would've been unable to take the call anyway, but I explained the significance of Col. Graham and had her call back immediately to apologise! The guy was such a good sport he offered to meet me for a pint and chat one day when he was next in England. Being a little younger, shyer and perhaps a little awe struck back then, I politely declined - something I've always regretted.
Col. Graham, if you read this and ever fancy that pint in a nice English country pub, I would be truly honoured, Sir!