As soon as Shep Smith signed off Fox News on Friday, he rode down a freight elevator to the underground garage where a car and driver were waiting. His departure was emotional enough as is -- he didn't want a tearful goodbye in his studio or the newsroom. He knew his colleagues would have questions and concerns. The big question: What will Fox's news operation look like without him? Among rank and file staffers and even some of the network's anchors, there is deep concern that the news side of Fox will be further squeezed by the opinion shows that...