Sgt. Antwain Vaughn, 31, an Army combat engineer who was brain-injured in a roadside bomb explosion in Iraq on Aug. 31, with his month-old daughter, Liyah, at the Polytrauma Rehabilitation Center. In daily therapy, he has been relearning how to eat and other basic skills. POY NPOY CREDIT: Tyler Hicks/The New York Times Newspaper Photographer of the Year, 2007, 50 Image Portfolio Wounded Veterans Story (9 Photos)