Media mogul Sumner Redstone dies at 97

FILE - In this April 20, 2013, file photo, media mogul Sumner Redstone arrives at the 2013 MOCA Gala celebrating the opening of the Urs Fischer exhibition at MOCA, in Los Angeles. According to an internal memo, Viacom CEO Philippe Dauman will step down, making Chief Operating Officer Tom Dooley interim CEO. The move is part of a settlement the Viacom board approved with National Amusements, a private company owned by the 93-year-old Redstone that holds controlling stakes in both Viacom and CBS. (Photo by Richard Shotwell/Invision/AP, File)