If you havent read Luttrell's book, Lone Survivor, please do. It is an amazing story about how this man and many other American heros faced terrible odds. The things that Marcus endured to survive and escape, and the amazing skill in fighting the Taliban is astounding.
Pick up the book, you won't be disappointed.
As for these scum bags, I somewhat wish that Marcus would have reached them first. They picked the wrong guys dog to kill.