William J. Birnes is the host of the History Channel's UFO Hunters and Ancient Aliens programs and a New York Times bestselling author. He is the coauthor of The Day After Roswell with Phillip Corso and the publisher of UFO Magazine. Birnes is a frequent radio and television talk-show guest, having appeared on Good Morning America, Dateline NBC, Entertainment Tonight, Coast to Coast AM, and Howard Stern, among others.