Ramin Djawadi is a great composer. He also composed the soundtrack of the wonderful Medal of Honor 2010, which should be an autheticity role model for all military games (yes, Mr. Crowe, if you want to learn what authenticity for a shooter is, you need to learn from that game) and extremely high production level.
This is my favorite track from MOH 2010, but all of them are great.
This is the song "Send a Boat" by Chris Knight.
The song was released on September 11, 2001. Chris Knight is a bit of a late comer, he was 30 when he started performing and 37 when he got his first record deal. He does Folk, Rock, Country and Americana.