 that that could go on in this country. That sort of thing could go on in this country. Now, his revelation and Heller's subsequent investigation resulted in the public outcry. There were congressional hearings and a class action lawsuit that ended the study after 40 years and won a $10 million settlement. Descendants of the people in the study say they're grateful to him. I spoke with Lily Tyson Head. Her father, Freddie Lee Tyson, was one of the men.