“I recall seeing a video tribute shortly after 911 about the boatlift. IIRC it was the largest boatlift since D-day or something.”
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Dunkirk ?
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I had to watch some of it. Yes - your are right. Larger than the evacuation of Dunkirk (300,000 in six days). This was 500,000 in nine hours. (Although I’m guessing the East River isn’t anything like the English Channel!).
Really is a touching video with the raw memories of everyday people doing extraordinary things.