Vallee Classification System

AN RATING

Classifies any anomalous behavior.

• AN1 Anomalies which have no lasting physical effects. i.e. amorphous lights, unexplained explosions.
• AN2 Anomalies which _do_ have lasting physical effects. i.e. poltergeists, materialized objects, areas of flattened grass, corn circles.
• AN3 Anomalies with associated entities. i.e. ghosts, yetis, spirits, elves and other mythical/legendary entities.
• AN4 Witness interaction with the AN3 entities. i.e. near-death experiences, religious miracles and visions, OBEs (out-of-body experiences).
• AN5 Anomalous reports of injuries and deaths. i.e. SHC (spontaneous human combustion), unexplained wounds as well as permanent healing that results from a paranormal experience.

MA RATING

Describes behavior of a UFO It is analogous to the Nocturnal Light, Daylight Disk and Radar Visual Hynek classifications.

• MA1 A UFO has been observed which travels in a discontinuous trajectory. i.e. vertical drops, manoeuvres or loops.
• MA2 MA1 plus any physical effects caused by the UFO.
• MA3 MA1 plus any entities observed on board. i.e. the airship cases of the late nineteenth century.
• MA4 Manoeuvres accompanied by a sense of reality transformation for the observer.
• MA5 A manoeuvre that results in a permanent injury or death of the witness.

FB RATING

Fly-by rating.

• FB1 A simple sighting of a UFO travelling in a straight line across the sky.
• FB2 FB1 accompanied by physical evidence.
• FB3 A fly-by where entities are observed on board (rare).
• FB4 A fly-by where the witness experienced a transformation of reality into the object or its occupants.
• FB5 A fly-by which the witness would suffer permanent injuries or even death. i.e. CASH/LANDRUM CASE.

CE RATING

Close Encounter rating. Similar to the Hynek Close Encounter ratings.

• CE1 UFO comes within 500 feet of the witness, but no after effects are suffered by the witness or the surrounding area.
• CE2 A CE1 that leaves landing traces or injuries to the witness.
• CE3 Entities have been observed on the UFO.
• CE4 The witness has been abducted.
• CE5 CE4 which results in permanent psychological injuries or death.

SVP RATING

The all-important credibility rating. "Marks" out of four are given for the three categories of source reliability (first digit), site visit (second digit) and possible explanations (third digit). A rating of 222 or higher indicates the case was reported by a reliable source, the site has been visited and a natural explanation would require a major alteration of at least one parameter.

SOURCE RELIABILITY RATING

• 0 Unknown or unreliable source.
• 1 Report attributed to a known source of unknown or uncalibrated reliability.
• 2 Reliable source, secondhand.
• 3 Reliable source, firsthand.
• 4 Firsthand personal interview with the witness by a source of proven reliability.

SITE VISIT RATING

• 0 No site visit, or answer unknown.
• 1 Site visit by a casual person not familiar with the phenomena.
• 2 Site visited by persons familiar with the phenomena.
• 3 Site visit by a reliable investigator with some experience.
• 4 Site visit by a skilled analyst.

POSSIBLE EXPLANATIONS RATING

0 Data consistent with one or more natural causes. 1 Natural explanation requires only slight modification of the data. 2 Natural explanation requires major alteration of one parameter. 3 Natural explanation requires major alteration of several parameters. 4 No natural explanation possible, given the evidence.