Army Air Force, or Army Air Field (later substituted by Army Air Base).

Anomalous aerial phenomena, old word for UFO.

Air Force Base, indicating a USAF base such as Wright-Patterson AFB.

Air Force Regulation, the so called USAF rules. Sometimes part of the Joint Army Navy Air force Publication, some of the AFRs are linked to UFOs: the AFR 200-2 establishes every non authorized revelation of sighting reports from military and civil pilots is to be considered as espionage.

Air Traffic Control.

Amateur astronomer, mystical and polish-american, he's been the first contactee of history. His alleged contacts start in 1952 at Desert Center, California, with a "Venusian" Nordic alien, witnessed by close friends at a certain distance. Later, Adamski meets Lord Desmond Leslie, who is preparing a book about UFOs in ancient India. The friendship between the two results in Adamski's tale about his encounter being published in "Flying Saucers Have Landed" in 1953. Later, Adamski gains public fame and a second book is published. He dies of heart attack in 1965.

Individuals used to discredit ufology and its phenomena by ruining the credibility of any witness and by controlling famous persons with the aim to discredit them face to the public.

Military procedure that is engaged by airplane commanders after an accident that could have endagered the security. In France, every Airmiss is followed by an investigation of the "Direction Générale de l'Aviation Civile" team.

Sightings of mysterious flying objects signaled by many American newspapers in 1896 and 1897.

Also called reflection coefficient, it's the ratio between the amount of light reflected and the scattered one. The albedo can also be calculated with the formula A=1-e (where "e" isemissivity). The result is between 0 and 1. If the two amounts of light are equal, the object is colourless. Mars' albedo is 0.25, Moon's 0.12.