Sgt. Nathan Scheller was twice denied for a Purple Heart, though roadside bomb explosions left him with lasting cognitive damage. Above, Scheller walks with his wife, Miriam, and his family. NPR/Frontline hide caption

itoggle caption NPR/Frontline

Food writer Nancy Harmon Jenkins and her daughter Sara, together in Spain in 1966. Sara, like her mom, is now also a cookbook writer. Courtesy of Nancy Jenkins/ hide caption

itoggle caption Courtesy of Nancy Jenkins/

Brendan Jannesen, 23, plays Wii ping pong as part of his balance therapy with physical therapist Brian Smith. Project Share provides a combination of physical, speech and occupational therapy, coping skills and psychological counseling to brain-injured troops. John W. Poole/NPR hide caption

itoggle caption John W. Poole/NPR