The First concept art looks awsome but i question the mask and why its not the one on the American GI the second one clearly shows the same...enemy? as on the American GI cover
That's an interesting looking bow on this cover: http://www.flickr.com/photos/47857688@N08/5979299144/
Reminded me (for some strange reason) of the magnetic rests you can get for bows that would allow the arrow to sit in the rest without actually touching it. Trouble is of course you had to put the magnetic implants in all your arrows if you wanted to use it. http://www.doubletakearchery.com/air-rest/features.htm