From BlackFive:
Soldiers' Angel Adelle has done all of the homework on this.

It's time for all of us to get tested for the national marrow database.
US Navy SEAL Justin needs our help. He served in Iraq and took care of us. Now it's our turn.

Let's spread the word and get as many people as possible tested to give Justin a shot at finding a match. Usually, all you need to do is have a swab sample of cheek cells. YOU may be the one to give someone a second chance - the life you save may be Justin's.

Read the Rest

I searched and there's a center about a half hour away from my house. There's very likely one near yours, too.