Allen Lynch spent his childhood in Chicago's south suburbs with fond memories of walks to his grandmother's house in Roseland. Lynch was often bullied, and at age 18, to test his strength he enlisted in the U.S. Army. That was 1964, and one year later the United States had troops on the ground in Vietnam. In 1966, Sgt. Allen Lynch began a tour of service that would earn him the Medal of Honor.   During this episode of the Crisis Cast, Lissa & Thom hear the experiences that led Sgt. Lynch to write the book "Zero to Hero" – he also shares wisdom on the future of military action, and what we should do in the present to better care for our veterans.  Plus, filmmaker George Bogdanich discusses his new documentary Vietnam Changed My Life.