<b>Curtis Peebles</b> is an aerospace historian for the Smithsonian Institution and the author of several books dealing with aviation and aerial phenomena.<br/>He is probably best known as a leading skeptic of UFO sightings and incidents, and he has been a talking head in several documentaries dealing with UFOs. He has appeared in the A&E Network's 1997 documentary "Where Are All the UFOs?", and on the History Channel documentaries "Unsolved History: Area 51" and "Roswell: The Final Declassification". In his 1994 book Watch the Skies!, a critical history of the UFO phenomenon, Peebles writes that: "I am a skeptic. I believe flying saucer reports are misinterpretations of conventional objects, phenomena, and experiences. I do not believe the evidence indicates the Earth is under massive surveillance by disk-shaped alien spaceships." However, Peebles also writes that "these [UFO] conclusions are those of the author; readers [of this book] are encouraged to make up their own minds."<br/>In addition to his UFO research, he has also written numerous books and magazine articles dealing with declassified (formerly secret) Air Force secret weapons projects, and he is a frequent lecturer at conferences and symposiums on aviation history.