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located. Also, due to the way the towers were constructed, the operators were not able to see the UFO; its location in the sky was not within their visual field through the glass window because of the roof overhang, so it hovered in what amounted to the tower's blind spot. Planes full of passengers were landing and taking off while the "UFO type thing" sat poised in the sky overhead, and no one knew what this thing was, why it was there, or what it might do next. This taped exchange, which includes giggling, Sue's need to proclaim she wasn't "high," and Dave's admission that he wouldn't admit it even if he had seen the disc, is a glaring commentary on the UFO taboo that infects aviation personnel even in the midst of an ongoing, possibly dangerous incident being reported by trained observers of aircraft. Dave might have reacted differently if the flying disc had been picked up on radar, but it wasn't. Perhaps the object had some kind of stealth capability, but at the same time we know that airport radars are not configured to register stationary objects such as this, or, at the other extreme, extraordinarily high-speed motion, because such behavior is outside the norm. The O'Hare incident is not the only example of this. vrroe4 re . rr) saa Unidentified objects are often not detected on radar, even when physically present and seen by multiple witnesses, and obviously this doesn't mean they aren't there. In many other cases, radar tracks are captured, providing valuable data on the object's movements. What determines this variability 1. Fortunately, a team of experts from Dr. Richard Haines's group NARCAP spent five months rigorously investigating the incident and its safety implications, and analyzing all possible explanations for the sighting. Their 154-page report was co-authored by Haines; meteorologist William Pucket, formerly with the Environmental Protection Agency; aerospace engineer Laurence Lemke, also previously with NASA on advanced space mission projects; Donald Ledger, a Canadian pilot and aviation professional; and five other specialists. [2] They concluded that the O'Hare disc was a solid physical object behaving in ways that could not be explained in conventional terms. It had penetrated Class B restricted airspace over a major airport without utilizing a transponder. The NARCAP study stated: and This incident is typical of many others before it in that an unknown phenomenon was able to avoid radar contact and, thus, official recognition and effective response. When combined with the deeply entrenched bias pilots have against reporting these sightings, the FAA seemingly had justifiable grounds for ignoring this And indeed the FAA tried hard to ignore the incident despite its safety implications, but pressure from the Chicago Tribune and others forced a response. Initially an FAA spokesperson attempted to explain the incident as airport lights reflecting off the bottom of the cloud ceiling. in detection is unknown. particular UAP as non-existent. [3]