Hyper-vigilance is one common symptom of post-traumatic stress disorder. PTSD, an anxiety disorder, can develop after a terrifying or life-threatening event, or a series of events causing extreme stress.
Nearly 20 percent -- or one in five returning war veterans -- reported symptoms of post-traumatic stress disorder or major depression. But, only slightly more than half of them sought treatment, the study found.



The remains of the second U.S. Army soldier who went missing during military exercises in Morocco...
The US military on Friday said it struck a vessel in the eastern Pacific, killing two...
Mysterious videos of darting black objects, renderings of flying ships, and eyewitness reports of unexplained lights...





























