In the chaotic last days of the Vietnam War, the US airlifted thousands of children out of Saigon. Forty years later, many Operation Babylift survivors have returned, looking for answers from a family or country they never knew.

When Tank 390 crashed through the gates of Saigon's presidential palace 40 years ago, it heralded the end of Vietnam's war. But the men who manned it have since lived in obscurity, poor yet forever bonded by the history they created.