http://news.yahoo.com/media-giants-suspense-over-fate-92-old-boss-022012684.html
92 year old Sumner has controlling ownership of both Viacom and CBS (including CBS Radio). He has stopped attending conference calls with Wall Street analysts – this is viewed as an indication his health is failing. He has made no moves to let go of control of the company and choose a successor. His consumption of antioxidants means he will live forever!
Ex-girlfriend files lawsuit to take control of his affairs
http://www.latimes.com/entertainment/envelope/cotown/la-et-ct-redstone-impact-20151128-story.html