Project Blue Book and the investigation into UFOs closes. There is no evidence that mysterious objects represent any threat to U.S. national security. But harrowing incidents of UFO sightings continue and the unexplained malfunction of U.S. nuclear missiles after an incursion leave the U.S. defenseless. Three former Air Force officers, who served at nuclear weapons bases in the late 1960s, break two decades of silence to tell their story.

Area 51, a military outpost in the desert, shrouded in secrecy for decades, has long been the focus of many Unidentified Aerial Phenomena or "UAP" rumors. A pop culture phenomenon, Area 51 prompted one Facebook group to suggest storming the facility in search for answers. Civilian UAP groups continue making progress in providing those answers. For the first time since 1969, Congress questions high level officials in the Pentagon on UAPs.