I'm glad you're checking out this series, the novel is absolutely brilliant if you ever get the chance to read it. I'll be fascinated to see what you, a Westerner, make of this story. Your comment of "I don't think they [Americans] would abandon them." speaks to a kind of innocence that many of America's former partners have lost. As a son of Vietnamese refugees myself, I can tell you there's a generation of people living in the West who can tell you escape stories similar to what you watched. No one needs to be set up for things to go terribly wrong during wartime. Especially one as chaotic and senseless as this one was. Enjoy the series, you're in for a ride.