Traveling with a group of security contractors in Iraq, this Pulitzer Prize-winning reporter reveals in gritty detail the men who live by Big Boy Rules. He discovers what motivates these mercenaries to put their lives in danger every day. What emerges is a searing, revealing, and sometimes darkly funny look at the men who live and work on the battlefields of Iraq. "Meticulous and chilling... vivid reportage."—Publishers Weekly