On days when the emphysema and the side effects of his traumatic brain injury are not flaring out of control, David Cochran sometimes leaves his house in Vista.
But simple things like traffic can set off his post-traumatic stress, and the U.S. Army veteran quickly returns home, where he doesn’t feel so vulnerable to the possibility of hurting himself — or others.
“I can’t be in crowds,” Cochran said. “I have trouble driving because of the road rage.”…