I first heard about the Rolling Thunder rally from my Dad, who took part in at least one run back in the day. And when I first decided to come out to DC for a semester, one of the arguments for the spring term was witnessing Rolling Thunder (I ended up opting for the fall...wanting to actually witness a fall and also DC at Christmas). It didn't matter so much since less than a year after my semester, I moved out here. And that first spring, I couldn't wait to see it.
If you're not familiar with what Rolling Thunder is, it's a motorcycle rally/demonstration started in 1987 to bring attention to the POW/MIA issue. And if you've ever heard the sound of a Harley, let alone even a small group, you can easily imagine why it was so named (And let me tell you, there is nothing like hearing that thunder!). I haven't seen numbers for this year's run, but the Rolling Thunder website says that there were possibly 500,000 riders in 2005.
To those who have served, those we encounter every day and those who have not made it home: Thank You.