April 30, 1975
The U.S. presence in Vietnam ended as U.S. Marines and Air Force helicopters, flying from aircraft carriers offshore, begin a massive airlift, Operation Frequent Wind. In all, 682 flights went out — 360 at night. 5,000 people were evacuated by helicopter from the military compound near Saigon's Tan Son Nhut airport; about 2500 from the U.S. Embassy (1000 Americans total, the rest Vietnamese).
That morning, two U.S. Marines, Darwin Judge and Charles McMahon Jr., Marine security guards, were killed in a rocket attack at the airport.
They were the last Americans to die in the Vietnam War. At dawn, the last Marines guarding the U.S. embassy lifted off.