US Military Helicopter in Afghanistan (IMAGE) WashU Medicine Caption A US military helicopter in Afghanistan meets with service members for a medical evacuation. Research led by Washington University School of Medicine in St. Louis indicates that when evaluating military personnel with mild traumatic brain injuries, early symptoms of post-traumatic stress are the strongest predictors of later disability. Credit Octavian Adam Usage Restrictions Credit to Octavian Adam License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.