James Thornett was typical. The rugged 34-year-old fought in the invasion of Iraq as a British paratrooper. When the war ended, he left the military rather than take a quieter assignment. "I didn't join the military to sit at a desk," he says. "I joined the military to jump out of airplanes and fight." Seeking that excitement, he returned to Baghdad with Global Risk Strategies, a London-based firm that had set up security for the U.S. embassy. Thornett discovered that he liked Baghdad, and the money was "great" - contractors can make up to $12,000 to $33,000 a month. So he stayed on, switching first to Edinburgh Risk and Security Management, then to Aegis, both British firms. Then, for a change of pace, he set up a bar and restaurant in the Green Zone called the Baghdad Country Club, a popular hangout for contractors until it was shut down last May.