After her son's suicide, linked to brain damage from sports, a Pennsylvania mother now fights to shield young athletes from harm. Her son Patrick Risha's mind started to crack during his high school football years, before he died at 32. This week finds them in Tampa at a major brain injury meeting hosted by the Mac Parkman Foundation. "We learned the hard way that the brain is much more fragile than any of us knew," Doug Zegel said. Bruce Parkman started his foundation after brain injuries claimed his own son's life.