As the war hits the six-year mark, Tucker is part of a history -- and a legacy -- still being written as the military tries to better understand the depth of the damage to those exposed repeatedly to the violence. "I still have the nightmares and wake up and find myself downstairs and I don't know how I got there," Tucker said. "I still see and dream the same things. ... Faces. Kids' faces. People that you have engaged or you have had contact with. ... You see your colleagues blown up. Things like that." He left the Army with a sour taste. He was sent back for his third tour despite the nightmares, depression, major hearing loss and painful injuries to his back and both feet. Then, the Army decided to give him a medical discharge for his back issues even though Tucker believes he could have recovered with rehabilitation. But he tries not to dwell on his frustration. "I try to distance myself from it as much as I can, because for me, the more I think about it, the more I reflect on what happened and what we did, the more I think the dreams and the nightmares actually come back."