The Unknowns by Youtube channel LEMMiNO is a 2017 documentary about the history of American UFO research.
Much of this research was undertaken under the name Project Blue Book by the United States Air Force. This series of studies commenced in 1952 and had two primary goals; to determine if UFOs were a threat to national security, and to scientifically analyze UFO-related data. The project was axed in December 1969 and fully shut down research operations in January 1970, despite having hundreds of cases still unsolved.
