. >> and bryan caster in has had three tour of duties in iraq. when he return home to his wife and family, he says he began to struggle with an unshakable feeling of fear and survivor's guilt. the long walk, the story of war and the life that follows shows us the toll that war takes on the men and women fighting it. so please walk, brian caster in. >> thank you so much. >> i will just sit. first of all, it's a real honor to be here at the miami book fair. i want to thank everybody involved, especially mitchell kaplan, who got me involved. it's a true honor to be on a panel with two veterans, benjamin, who serve in the marines, and brian in the air force. i don't belong on a panel with people who actually lived through it, although my book is about war as well. last through, there are other veterans in my book are actually here. stan and dave roller are in the back there, and thank you for being here. means a lot to me that you're here. [applause] >> one of the things i'm asked is why did i write a book about this one combat outpost in afghanistan