i get example, one of the guys is a marine named james hassell, and james was an 18 year old kid, enlisted in the marines, felt it was his calling, his destiny. but his mother was furious. she was patriotic and wanted to defend the country but she did want her son to do. and so james indicated moment that i describe in the book, he finally said to her, he promises her that he's going to come back from iraq in one piece. that promise was really driving or. and as james -- fast-forward a year or so, he's in iraq in this awful, awful firefight. a buddy of his its injured badly, and they have to evacuate them out to an awaiting medevac. about 100 yards down and out outside of his house there in, the problem is that there is insurgent fire going directly into that holy. there is no way james and his buddies can get ryan, the injured guy, outcome without going through the fire. what does james duplex puts up his hands and says throw him on my back. james is the biggest guy in the unit at the time, and he knew, he said, i'm the guy. i can't leave writing here to die. he said i may die on the way