Carl Sagan and I have history. I hosted/produced "Saturn and Beyond" on PBS with Sagan as our only guest for the Voyager flyby. In the parking lot after, we got into quite a debate about UFO reality. Subsequently, in my NBC series, Dark Skies, I turned Sagan into a continuing character, working for Majestic, a 60s Donald Menzel. A charismatic man who history will probably reveal had a secret or two on the ET front.