Wings Hauser was 29 in Who'll Stop the Rain when he played the character 'Marine Driver'.
That was over 46 years ago in 1978.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 76, and has starred in 63 movies in total, 62 of those since Who'll Stop the Rain was released.
In Who'll Stop the Rain, I think Wings Hauser looks: