Peter Jennings, the late anchor of ABC’s World News Tonight, once remarked the following as host of a television investigation of unidentified flying objects: “We have a lot of skeptics—I am very skeptical—but we seriously investigated something a lot of people are serious about,” he said. “And when we come to the end, this is wonderfully interesting. “More than 80 million Americans believe intelligent beings from somewhere else have come here,” he said. “Forty million believe they have seen UFOs, so this is of deep interest to people.” Jennings said further in exploring the wide span of those interviewed who...