NEW YORK (AP) — 21st Century Fox says Roger Ailes has signed a new contract to continue as chief executive of Fox News Channel, the network that has become a ratings and financial powerhouse since he started it two decades ago. The parent company moved quickly to lock up Ailes, 75, after some doubts about his future emerged last week following news that company patriarch Rupert Murdoch was turning over some power to his sons Lachlan and James.Read more on NewsOK.com