South Vietnamese Rangers struggle to carry a wounded comrade across a street in Saigon under machine gun fire from the Viet Cong during the Tet Offensive, Feb. 6, 1968. (AP Photo/Dang Van Phuoc)
South Vietnamese Rangers struggle to carry a wounded comrade across a street in Saigon under machine gun fire from the Viet Cong during the Tet Offensive, Feb. 6, 1968. (AP Photo/Dang Van Phuoc)