Unexplained Aerial Phenomena in the United States, 1945–1975: Evidence of a Centrally Coordinated Non-Human Intelligence with Persistent Low-Level Presence at Strategic/Nuclear Sites
To the point
Ian M. Porritt, Larry J. Hancock, and Sean Grosvenor conclude that a single centrally coordinated non-human intelligence is persistently present across the continental United States, with intermittent, regionally focused UAP activity near nuclear sites carried out by a small mobile reconnaissance force that avoids interceptors rather than engaging in mass incursions.