On May 8, 1971, a freelance photojournalist was flying over central Vietnam when he looked down and saw something unexpected: ...

It effectively ended on 30 April 1975 with helicopter flights taking staff and dependants from the roof of the US Embassy in ...

This story appears in the August 2015 issue of National Geographic magazine. For days up there ... like me—imagine they could win the war in Vietnam by subjecting Laos to such indiscriminate ...