Malcolm Browne died last week. George Esper and Horst Faas earlier this year. Hugh Mulligan and David Hallberstram left ages ago. The Vietnam War, and those who covered it, are truly becoming history. We’re coming up on the 45th anniversary of the Tet offensive, certainly a turning point of that long, long war. Browne arrived in Saigon for the AP on Nov. 11, 1961. Do your math.