Improvised bombs rattled former Army Spc. Adam Pittman a dozen times in his three tours in Iraq, most severely when his Bradley fighting vehicle ran over one hidden in the dirt in 2005.

Now, part of Pittman's brain has gone dormant, and on most days he can't think straight.

He leaves the room and forgets what he was searching for. He gets migraines so piercing that his right eye sometimes curls away from his left. Anger comes easily, inspiring rages that sometimes have his wife terrified for herself and their 3-year-old daughter.

Although Pittman, who lives in Lillington, N.C., left the military in July 2008 complaining of headaches and memory loss, it took nearly a year for him to get a brain scan and another five months to start getting temporary disability benefits.

"They were blowing me off," Pittman, 30, said of the Department of Veterans Affairs. "I feel like things that have to happen, they're dragging their feet on."

Nearly 30,000 veterans have suffered some kind of traumatic brain injury in the wars in Afghanistan and Iraq, an estimated 2,000 of them severe enough to put the warriors into comas or leave them with severe disabilities. Yet eight years into the wars, testimony before Congress shows that veterans still suffer yawning gaps in coverage for what's become the conflicts' signature wound.

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