This book goes inside the real X-Files. Not only have the FBI and CIA investigated UFOs, but both agencies have actively tried to conceal that fact from the public. This book proves it. These agencies collected information which, when combined with evidence collected by Air Force Intelligence, proves that at least some UFOs are interplanetary craft. Furthermore, top Air Force officials knew this over sixty years ago and withheld (covered up?) this information from the American people. Written by Dr. Bruce Maccabee, one of the most respected voices in UFO research, this is a riveting page-turner, packed with information. It tells the real story of why America’s leading intelligence agencies have been genuinely concerned about UFOs, and why the “problem of UFOs” is unlikely to go away any time soon.
Praise for the book:

Dr. Bruce Maccabee has written an intelligent, concise and lively history of the UFO phenomenon, which includes his own fascinating relationships to CIA staff and others from the official world. Written with tremendous authority and insight by one of the leading scholars and luminaries of the field, The FBI-CIA-UFO Connection is meticulously researched and reflects decades of involvement by the author.
Everything in this book is documented fact, presented in a straightforward, no-nonsense style which is easy to read. Maccabee tells a riveting story of an unfolding and building UFO reality in conflict with now-transparent government attempts to explain them away and deny their possible interplanetary origin. He dispenses with irrelevant and peripheral material that clog so many other books on the topic, using once secret official documents, investigated sightings and newspaper reports as the basis for a crisp and fast-paced narrative. He knows how to focus on what matters, and reveals a deep knowledge of the implications of key developments within the current historical context.
The book is anything but dry—it is written as a page-turner, in short, clear chapters punctuated with humor and a conversational style that makes you want to keep reading. I trust Maccabee's expertise completely, and I learned a great deal from this outstanding book, which concludes with the best assessment I’ve ever read concerning the unending, unanswerable question of a government cover-up. I recommend the book highly to anyone interested in UFOs.
—Leslie Kean, author, UFOs: Generals, Pilots, and Government Officials Go On the Record

Bruce Maccabee’s new book is a sharp rebuke to die-hards and ideologues on both ends of the UFO spectrum. It is a stinging, substantive rebuttal to zealous debunkers who don't want the UFO subject to be taken seriously because it proves, beyond any reasonable doubt, that officials at the highest levels of our military and intelligence communities regarded the UFO mystery as an issue of paramount importance. The documents which Dr. Maccabbee helped to squeeze out of our government are amazingly candid, precisely because they were never meant to be seen by the public. Skeptics will not be able to dismiss this evidence by invoking swamp gas or weather balloons.
The book is also a wake up call for those UFO faithful who breathlessly await some sort of "Full Disclosure" by government officials. It's not going to happen. The best glimpse we will ever get into the murky world of official UFO files is by reading the materials that were plucked out of the murky swamp before the spooks had time to react. This book delivers the goods, and should be read by anyone who is a serious student of the subject.
—George Knapp, Investigative Reporter and author, Hunt for the Skinwalker: Science Confronts the Unexplained at a Remote Ranch in Utah