In January 1968, communist forces launched the largest offensive of the Vietnam War. Starting on the Vietnamese New Year known as Tet, North Vietnamese and Viet Cong forces attacked more than 100 South Vietnamese cities, catching South Vietnamese and United States forces totally by surprise. Although the Tet Offensive was considered a military failure for the communists, the scope of the conflict led the United States military, public and political leaders to rethink continued support for the war. This segment from Iowa Public Television's Iowans Remember Vietnam includes archival footage and interviews with Iowa veteran Paul Dwyer. Dwyer describes his role as a radio operator during the war, and explains his experiences during the Tet Offensive.