"BOATLIFT, An Untold Tale of 9/11 Resilience"
"The great Boatlift of 9/11 became the largest sea evacuation in history. Larger than the evacuation of Dunkirk in WWII, where 339 thousand British and French solders were rescued over the course of 9 days. On 9/11 nearly 500 thousand civilians were rescued from Manhattan by boat. It took less than 9 hours."
