Historielärarföreningen erkänner att myndigheter i Belgien, Italien, Frankrike, Brasilien, Mexiko samt Chile officiellt konstaterat UFOn i sina luftrum.
The journalist and author Clas Svahn has spent a large part of his life trying to answer that question by listening to, watching and reading thousands of reports and thoroughly dissecting them. He was for 22 years the director of the organization UFO Sweden, he has written dozens of books about mysterious phenomena, not only UFOs, and he is now an internationally renowned expert on UFOs."