Sgt. Derrick Junge was diagnosed with a concussion, but passed over for a Purple Heart. Junge has not received rehabilitation or treatment for ongoing medical difficulties, and he struggles with simple tasks. NPR/Frontline hide caption

itoggle caption NPR/Frontline

Sgt. Victor Medina suffered brain damage when an IED hit his truck in Iraq. Even after he was diagnosed with a traumatic brain injury, he found he had to fight to get adequate care. Blake Gordon/Aurora Photos hide caption

itoggle caption Blake Gordon/Aurora Photos

Michelle Dyarman, a former major in the Army reserves, was involved in two roadside bomb attacks and a Humvee accident in Iraq in 2005 that left her with serious cognitive problems. David Gilkey/NPR hide caption

itoggle caption David Gilkey/NPR

Joanna Chapman-Smith's latest album is called Contraries. courtesy of the artist hide caption

itoggle caption courtesy of the artist