We often look at the soldiers we send off to battle as warriors. But the experience of war transforms can transform fighters into humanitarians; we hear from two young veterans for whom this is the case. U.S. Marine  Rye Barcott is an Iraq veteran, and founder of Carolina for Kibera: a non-governmental organization that uses sports and health care to nurture and develop young leaders in the slums of Kenya. He's also the author of "It Happened on the Way to War: A Marine's Path to Peace."  Eric Greitens is a Navy SEAL, Iraq veteran, Rhodes Scholar, and founder of The Mission Continues: a non-profit that trains wounded veterans for leadership roles in their communities. He's also the author of "The Heart and the Fist: The Education of a Humanitarian, the Making of a Navy Seal."