Book excerpt: Michael Keller was once a software executive from Florida. Then came September 11, 2001. A few weeks after the al-Qaeda attacks on America, he joined the Army National Guard and was deployed to Iraq in November of 2005. In this revealing collection of e-mails and photographs, Keller shares his first-hand experiences in the War on Terror. Discover how it feels to man a gun-turret during convoy operations through the Highway of Death, what its like to guard the detainees at Torture Central, and what goes on in a soldiers mind during the moment he decides whether or not to kill someone. But at the heart of Torture Central is Kellers frustration at being assigned to the prison at Abu Ghraib without any training and with orders to torture detainees and ignore the Geneva Convention. His candid accounts illuminate his struggle to end the atrocities despite threats of punishment by superior officers. Shockingly, this mistreatment happened a year after the infamous abuse photos were published, following numerous investigations and public promises stating that the situation had been corrected. Thought-provoking and full of chilling detail, Kellers vivid look at Operation Iraqi Freedom is a must-read for all Americans.