A synthesis is presented of data concerning Unidentified Flying Objects (UFOs) reported during the past 20 years through governmental, press and private channels. The serious evidence is clarified and analyzed. The data are reported by categories of specially trained observers and studied by patterns of appearance, performance and periodic recurrence.
During the process of selecting the most reliable and significant reports, emphasis was placed on the qualifications of the observer and on cases involving two or more observers. This resulted in 740 reports being selected, after consideration of over 5000 signed reports and many hundreds of reports from newspapers and other publications.
An overall look is taken at the UFO problem: The historical development of the mystery, Congressional attitudes and activity, consideration of the problems and dangers involved, and discussion of what is needed in the way of organized scientific research.
Evidence is presented in support of the hypothesis that UFOs are under intelligent control, making plausible the notion that some of them might be of extraterrestrial origin.
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