40 Years After Vietnam, Retracing a Journey From Saigon to San Francisco Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email South Vietnamese flee Saigon in April 1975 with the help of the U.S. military. ( Dirck Halstead / Getty ) Produced by Jillian Weinberger Produced by PRI and WNYC