Plain-language entries for the acronyms and program names that appear across these files.
PURSUE — short for *Presidential Unsealing and Reporting System for UAP Encounters* — is the interagency program that operationally produced the war.gov/ufo…
UAP — *Unidentified Anomalous Phenomena* — is the U.S. government's preferred term for what the public has long called UFOs. Adopted in 2022 to replace the …
AARO — the *All-domain Anomaly Resolution Office* — is the U.S. Department of War office responsible for investigating and resolving UAP reports across serv…
In early 2026, the U.S. Department of Defense was formally renamed to the Department of War. The change restored the historical name used from 1789 until 19…