Documents / Official release
This is the Office of the Director of National Intelligence's Preliminary Assessment on Unidentified Aerial Phenomena, dated 25 June 2021 and prepared for congressional committees under Senate Report 116-233. It covers 144 US government reports from 2004 to 2021. Only one was explained with high confidence, as a deflating balloon. The report finds that UAP pose a flight safety issue and possibly a national security challenge. It proposes five explanatory categories and recommends standardized reporting, expanded collection and more research investment.
UNCLASSIFIED 8 UNCLASSIFIED APPENDIX A - Definition of Key Terms This report and UAPTF databases use the following defining terms: Unidentified Aerial Phenomena (UAP): Airborne objects not immediately identifiable. The acronym UAP represents the broadest category of airborne objects reviewed for analysis. UAP Event: A holistic description of an occurrence during which a pilot or aircrew witnessed (or detected) a UAP. UAP Incident: A specific part of the event. UAP Report: Documentation of a UAP event, to include verified chains of custody and basic information such as the time, date, location, and description of the UAP. UAP reports include Range Fouler1 reports and other reporting. 1 U.S. Navy aviators define a “range fouler” as an activity or object that interrupts pre-planned training or other military activity in a military operating area or restricted airspace.
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Official release, from the nara collection. The PDF is mirrored here; the original link is above. 9 pages are in the text index: search them above, or from the library's search.