A Real Mystery!!!

I've always prided myself in saying that you can find anything on the Internet if you know how and where to look. Over the years, I have found things for people who were unsuccessful in finding things themselves on the Internet because I know where and how to look. The one thing that has always stumped me, though, is finding an email address for someone. If there is some super database with a directory of everyone's email on it, I sure haven't found it yet. This leads me to a real mystery. A while back, I received an email inviting me to a reunion of former crew members who served on my old ship, the Tattnall DDG 19, which was a guided missile destroyer. You don't want to know how long ago I got out of the Navy; even I don't want to know! Let's just say that the Tattnall was decommissioned several years ago. The big mystery to me is how they got my email. When I was in the Navy, it was long before email was even thought of, much less existed. As a former crew member, I could understand how they would know my name, but how did they know my email address? As far as I know, even the Navy doesn't know my email address, so how did they get it???? To the best of my knowledge, I've never emailed any of my old shipmates. Maybe they found that elusive email database that has everyone's name and email address for everyone in the world. I wish now that I would have saved that email and replied and ask how they got it. I guess they must know something I don't. But then again, most people know some things I don't, so what's one more thing.
--Mike--