Dr. David Williamson, medical director for the Inpatient Psychological Heath and Traumatic Brain Injury program at the National Naval Medical Center in Bethesda, Md., and his staff are breaking new ground in identifying and treating traumatic brain injuries and mental-health issues. U.S. Navy photo by Seaman Alexandra Snow Dr. David Williamson, medical director for the Inpatient Psychological Heath and Traumatic Brain Injury program at the National Naval Medical Center in Bethesda, Md., and his staff are breaking new ground in identifying and treating traumatic brain injuries and mental-health issues. U.S. Navy photo by Seaman Alexandra Snow SHARE: Download: Full Size (5.32 MB) Credit: VIRIN: 227080-Q-EME70-362.jpg Photo Gallery