World around you? Will you fight for me? Game trailer song

[What's that song?]

Got a "what's that song" request too...
GameTrailers.com - Ghost Recon Advanced Warfighter 2 (PC, Playstation 3, Xbox 360) - Media, News, Reviews, Previews
Go down to "Exclusive Launch Trailer," and then at the last minute or so of the video they start playing this song. What is it?

If you don't know exactly what it is, can you post up some of the lyrics you manage to hear in between explosions and gunfire? I've tried some (world around you, fight for me, walk with me), but I can't get enough to run an effective lyrics search.

Also, the people that make this game have in the past taken older songs and had a band cover them (they did it with Hendrix's All Along the Watchtower last year), so there's a possibility it's that too.

Thanks

[What's that song?]

A quick glance at the forum rules shows nothing against bumping a topic, so I'm going to go ahead and do it once, if nothing comes of it I'll let it slip to the depths of the forum.