Army Capt. Alex Houston, 21st Signal Brigade Headquarters and Headquarters Company commander, talks with soldiers at Fort Detrick, Md. Houston lost his left hand in Iraq, but continues to serve. U.S. Army photo Army Capt. Alex Houston, 21st Signal Brigade Headquarters and Headquarters Company commander, talks with soldiers at Fort Detrick, Md. Houston lost his left hand in Iraq, but continues to serve. U.S. Army photo SHARE: Download: Full Size (0.71 MB) Credit: VIRIN: 790583-T-UGL80-692.jpg Photo Gallery