AARO's case-resolution report says a military pilot reported four potential UAP on 26 January 2023 in the Eglin training range, and that the case was resolved with moderate confidence as very likely a lighter-than-air object such as a large commercial lighting balloon.
The document is a primary official source because it records the reporting environment, sensor categories and final case status used by AARO.
For the Eglin dossier, the report fixes the central evidentiary boundary: the event was operationally real, but AARO did not confirm anomalous behavior.
The source should be read as a resolved UAP assessment, not as evidence for an extraordinary craft.