Encounter Atlas
Why it matters
Showed that once pilots were encouraged to report, the numbers jumped.
Official releases / USUnited States
2022 Annual Report on Unidentified Aerial Phenomena
The follow-up to the 2021 assessment. It added 366 reports, 247 of them new, for a total of 510. About half were tentatively matched to balloons, drones or clutter; 171 stayed uncharacterised, and a few appeared to show unusual flight.