A great many soldiers are returning from Iraq and Afghanistan with symptoms of Post Traumatic Stress Disorder (PTSD). Clinical experience with many people has shown the effectiveness of the techniques of Energy Psychology for rapidly alleviating PTSD symptoms. The study proposes to determine whether a very brief course of treatment (3 sessions) with a common form of Energy Psychology called Emotional Freedom Techniques (EFT) has an effect on the stress biochemistry of subjects, by measuring their levels of stress hormones (cortisol, DHEA) before and after treatment.