Hall of Fame football player Forrest Gregg poses with the clay model that was used for his bust in the NFL Hall of Fame after an interview on Nov. 14, 2011, during which he talked about his battle with Parkinson's disease, in Colorado Springs, Colo.(AP Photo/Ed Andrieski)
Read the article: Health battle for 'Iron Man': NFL Hall of Famer Forrest Gregg fighting Parkinson's disease
