The Vietnam Veterans Memorial is a 2-acre (8,000 m²) national memorial in Washington, D.C. It honors U.S. service members of the U.S. armed forces who fought in the Vietnam War, service members who died in service in Vietnam/South East Asia, and those service members who were unaccounted for (Missing In Action) during the War. Its construction and related issues have been the source of controversies, some of which have resulted in additions to the memorial complex.