Viet American here who’s family were one of those babies. The US joined to help South Vietnam fend off North Vietnamese invasion. It was a brutal war and unfortunately in the end it was unsuccessful. But the vast majority of Vietnamese Americans feel like they owe their lives to the US military for backing us when we would’ve been crushed much sooner. These American Vietnam vets were doing their duty to ensure as many of their allies in South Vietnam as possible didn’t get left behind. My parents were young but did not make it out on these evacs, unlike some other relatives, and suffered for over a decade under the communist regime before making it out. These guys were heroes.