More than 70,000 Knox County residents are sixty years old or older. They are affected by a variety of issues. Those include health care, the government's new Medicare drug plan, scams targeted toward the elderly and the changing role of grandparents in families. Those issues and more will be addressed at the Knox County Senior Summit and Expo. Knox County Mayor Mike Ragsdale tells WUOT's Chrissy Keuper he expects about a thousand seniors at today's summit...