Visiting a friend

[Diamondback]

Thanks for posting this. I had the chance to visit Arlington several years ago and made it a point to leave a penny.

What's the "coin code" for us who didn't get the chance to serve? The sand in my college mentor's hourglass is starting to run low, and while I'd like to honor the tradition about "throw a nickel on the grass save a fighter pilot's ass" I'm not sure the etiquette for us not part of the "band of brothers."