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Defense Intelligence Agency program investigating UAP as potential threats, revealed publicly in the 2017 New York Times story.
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DIA-funded program contracted to Robert Bigelow's BAASS to study UAP and related anomalous phenomena, including Skinwalker Ranch.
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Long-running Air Force UFO investigation that closed after the Condon Report; concluded the large majority of sightings had conventional explanations.
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Classified UK MoD study, later declassified, concluding that most UAP sightings likely had natural atmospheric-plasma explanations.
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Second official Air Force UFO study, created after Project Sign was disbanded; generally skeptical in its conclusions.
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The US Air Force's first official UFO investigation, created after the 1947 Kenneth Arnold sighting and Roswell incident.
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CIA-convened scientific panel that reviewed UFO evidence and recommended public education and debunking efforts to reduce reports.
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Brief Soviet-era scientific commission established to formally study UFO reports during glasnost-era openness.
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The Pentagon's initial task force for standardizing military UAP reporting, created after the 2017 NYT story broke; superseded by AARO.
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Investigated UFO reports through a dedicated internal desk before formally closing the effort as a poor use of resources.
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Air Force-funded academic study that concluded UFOs did not merit further scientific investigation.