As TK said, he was leader of his convoy.
I said his "will to fight and survive". Fight just means struggle here - not to pick up an gun and shoot or anything. But fight for life and to see his family again. To never give up and give in to fear. To stay hopeful in the face of sure death (as with nick berg or mr hamills co-workers desecrated bodies hanging from bridges, or Jessica Lynch's caputured commrad who was shot in the back after being taken prisoner)....
Take any one of the 12 points listed (and I could have gone on, but figured you got the point) and standing alone, would be respectable, but not heroic. But when you add all the things together, in my book he comes out a hero.
Where did he risk his life for others? Well, i'd say this covers that pretty well:
"But the situation became even graver than Hamill could imagine. Already, dozens of his fellow KBR colleagues had been killed. Yet Hamill felt he had a duty to his job, no matter what the risk."
He put himself at risk (and was shot and taken prisoner in a very hostile setting) for a cause and for people he supported. You disagree with the cause, but that shouldn't mean his risk and intentions were any less 'self sacrificing'.
So again, I don't want to beat a dead horse anymore, but you didn't just make an observation - you put a spin and slam on it - veiled as it was.