hanoi -- capital city of vietnam. seven and a half million people live here. in the winter it's chilly and damp. in the summer hot, humid, subtropical. the boulevards and many of the buildings are french, but its heart and soul is always, always vietnamese. [ laughter ] >> anthony: americans coming here as tourists for the first time, especially veterans of the war, are shocked by how friendly the place is. people are genuinely happy to see you. this is hanoi's old quarter, but it's looking less and less old these days. man, this area's changed, though. the irish/czech-themed pub next door. vietnam is a young country. almost half of vietnamese are under the age of 30. fewer every year even remember what they call here "the american war." those years were a defining time for just about everyone, vietnamese or american, who lived through them. and though there are still a lot