The 20 June 1966 In Florida The expert pilot James O'Connor was a 3,000 meters height found to be dominated by a UFO , Just above him. Was probably descending because, according to the testimony of the pilot of its size varied from those of a 5 franc coin placed on the palm of the hand to those of a football field. The object was very close to ' air and covered entirely with his shadow . Having a loud noise the pilot says it has speeded up in off the sidelines of the launch after it faster but that could not fatigue over the air. Reached a height of 1'200 m concentrated above his head, was terrified when he saw that the object was still impressive over his head, tried several other maneuvers , Turns right, rather than accelerates the UFO but could not let distance. Suddenly the object slope and disappeared : Ascended vertically at a speed that seems to be a fall . The spot pointed out that the apparatus was of tonneaux in reverse gear to 360 ° . This sighting, along with many others groped us to limit the maximum speed in a range that goes from 0 to 50,000 Km / h . But since we can not assess higher speeds it can not be excluded completely that they can reach speeds even higher .