Reframing the war-wounded soul in a new memoir

Photographer Finbarr O'Reilly Former U.S. Marine Corps Sgt. Thomas Brennan both went through the intensity of combat, and the loneliness and doubt that follows. Now they’ve written a dual memoir, "Shooting Ghosts," a story of two lives that came together in war. The co-authors join special correspondent Nick Schifrin for a conversation.