The Vietnamese man introduced by Gen. Westmoreland was Nguyen Cao Ky, who at the time was Vice President of South Vietnam. He left Vietnam on April 30, 1975 and wound up in Orange County California, where he ran a liquor store. He died in 2011.
Yes, know the story. Sad. Will say no more.
Do you know if he tried to help others escape South Vietnam after he fled?