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Unidentified Aerial Phenomena : Eighty Years of Pilot Sightings

By: Dominique F. Weinstein

...verfly the object, observing it between themselves and the earth below. Military pilots are trained to estimate distances, shapes and speed of flying machines. Sometimes, pilots’ sightings are confirmed by radar detection, observers on the ground (control tower personnel, Ground Observer Corps, civilians,..) or other pilots in flight. In some cases electro-magnetic eff...

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