The war ended in 1975, not 1971. I remember, I was 16 years old at the time.
I talked about the refugees in this episode of my podcast:
https://blubrry.com/hoseasia/87495585/episode-122-the-boat-people/
David Tran is mentioned there, but for more about him, look up Episode 293 of another program, The China History Podcast.
You’re most likely correct about the end of that war.
The early 70’s have begun smushing together for me here lately.
for later