A photograph of an execution on a Saigon street remains one of the defining images of the Vietnam War, 50 years later.

NEW YORK - Eddie Adams, a photojournalist whose half-century of arresting work was defined by a single frame - a Pulitzer Prize-winning Associated Press photo of a communist guerrilla being ...

South Vietnamese Gen. Nguyen Ngoc Loan fires his pistol into the head of suspected Viet Cong officer Nguyen Van Lem on a Saigon street early in the Tet Offensive, Feb. 1, 1968. (AP Photo/Eddie Adams, ...