Wilbert Smith Archives Files Box 1136 05 1136-05-p049

Document Text (OCR)

20 Alé 3. The radar screen has picked up birds and in one case a flock of ducks, Flight interceptions proved these phenomena. ‘An explanation of known types of visual sightings are as follows: 2. Present-day jet aircraft, flying at great speeds and h altitudes, are often mistaken for unknown objects by the untrat observer, Sunlight reflections from the polished surfaces of air graft can be scen plainly even when the aircraft itself 19 too dis~ tant to be visible. ‘The exhaust of jet aircraft...