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Glossary
The acronyms and terms that appear across the register, in plain language.
- UAP
- Unidentified Anomalous Phenomena — the current official term for sightings or sensor contacts not yet identified. Broader than the older “UFO,” covering objects in the air, in space, and underwater.
- UFO
- Unidentified Flying Object — the historical term used across mid-20th-century records. Many historical files on this site use it.
- AARO
- All-domain Anomaly Resolution Office — the U.S. office responsible for reviewing and resolving UAP reports.
- PURSUE
- The public disclosure release effort whose records this register tracks.
- MISREP
- Mission Report — a standardized U.S. military form recording the circumstances of an operation, sometimes used to report a UAP observation.
- FD-302 / FD-1057
- FBI forms: an FD-302 records a witness interview; an FD-1057 records investigative activity. Several cases here are drawn from these.
- Range Fouler
- A U.S. Navy report documenting an unauthorized intrusion into controlled airspace during operations or training.
- EO/IR sensor
- Electro-optical / infrared sensor — a camera system, often on military aircraft, that captures visible and heat imagery. The source of many UAP videos.
- Transmedium
- Describing an object that appears to move between media — for example from air into water — without obvious change.
- Evidence Strength
- Our first axis (0–100): how solid the official record is, from source authority, corroboration, evidence quality, provenance, and official disposition.
- Anomaly Level
- Our second axis (0–100): how far officials are from explaining a case, from how explained it is, the capabilities described, and any unexplained residual.
- Evidence bands
- Labels for the Evidence axis: Noise, Unverified, Corroborated, Substantiated, Officially Documented.
- Anomaly bands
- Labels for the Anomaly axis: Identified, Partially Explained, Unresolved, Unexplained. “Unexplained” means officials haven’t explained it — not that it is extraterrestrial.
- Thread / Case / Artifact
- Our three layers: a Thread is a disclosure process; a Case is a single scored event; an Artifact is an individual file (a document, video, image, or audio clip).
- Provenance
- The documented chain of custody of a record — where it came from and how it reached the public, which affects how much weight it carries.
- Disposition
- What officials formally concluded or did with a report — for example, logged as unresolved, identified, or referred elsewhere.
- DVIDS
- The Defense Visual Information Distribution Service, a government platform that hosts some released video.
- ODNI
- Office of the Director of National Intelligence.