We are in the presence of an exceptional UFO case, observed by trained professionals and corroborated by sophisticated means. The general characteristics are typical of other UFO observations, which are validated by the study of numerous reports and the testimonials of thousands of eyewitnesses. I would like to thank my colleagues Thomas Tulien, James Klotz (USA), and Martin Shough (Scotland), who have accomplished a colossal job of historical recreation and collection of data. Without their tenacity and concern in checking the smallest details we would know very little about this extraordinary observation. Furthermore, thanks to all direct protagonists who agreed to speak and clarify their personal observations after more than thirty years. The USAF did not classify this observation, however, considering their responsibilities, these witnesses were naturally obliged to remain silent or jeopardize their professional careers. The end of the Cold War, and the fact that most are now retired has certainly contributed to the release of the information. Without their contributions we would not have been able to successfully complete this analysis. The manuscript was prepared from June to August 2005, and translated in November 2005, with additional editorial work by Thomas Tulien and Prof. Suzanne Jones. Amendments were made in February 2006, with two additional discussion sections added in March 2006.
