Former Staff Sgt. Kevin Owsley is not quite sure what rattled his brain in 2004. Could it have been the roadside bomb that exploded about a yard from his Humvee? Or was it the rocket-propelled grenade that flung him across a road as he walked to a Porta John on base just weeks later. After each attack, he did what so many soldiers do. He just shrugged off his ailments (headaches, dizzy spells, persistent ringing in his ears and numbness in his right arm) chalking them all up to fatigue or dehydration. Given that he never lost consciousness, he figured the discomfort would work itself out and kept it to himself….

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