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Shell shock, combat fatigue, Vietnam Syndrome--whatever the name, post traumatic stress disorder (PTSD) has been with us since ancient Greece. With 20 percent of the veterans of Afghanistan and Iraq exhibiting PTSD symptoms, the United States military has a strong interest in combating the condition. Navy psychiatrist Robert N. McLay has been at the forefront of these efforts, using virtual reality to treat service members and veterans with PTSD. So far, the virtual reality program shows more promise than traditional therapies. Several years into the project, McLay recounts openly and with bleak honesty the successes, failures, and limits of virtual reality treatment--but his experiences hold out hope.--From publisher description.