NICAP and the Pressure Campaign
Major Donald Keyhoe was a Marine Corps aviator and journalist who became the most prominent UFO advocate of the 1950s and 1960s. He wrote three highly influential books — beginning with The Flying Saucers Are Real (1950) — arguing that the Air Force was concealing evidence of extraterrestrial craft. He served as director of NICAP (National Investigations Committee on Aerial Phenomena) from 1957 to 1969.
Under Keyhoe's leadership, NICAP assembled a board that included Admiral Roscoe Hillenkoetter — the first CIA director — and built a network of investigators who collected and analysed pilot and military UAP reports. Keyhoe's approach was systematic and adversarial: he believed the Air Force was engaged in a deliberate cover-up and pursued transparency through congressional lobbying and public pressure.
The Pioneering Advocate
Keyhoe's work established the template for civilian UAP advocacy that has persisted for seven decades: document the evidence, challenge official explanations, lobby elected officials, and maintain pressure on the executive branch. His books were bestsellers and shaped public opinion on UFOs throughout the crucial decade when the phenomenon was most frequently encountered.