I am a professor of physics at the University of the Atlantic. On 5 November 1980 conversation with a neighbor in the asotea the building where you live in the city of Barranquilla located in Carrera 45 and Calle 55 (Colombia) on an investigation had been doing for 15 years, trying to entender the so-called "UFO phenomenon" when the compañero asked me the question: you believe UFOs exist ?. If its away, I said jokingly, in this instatae should receive one. He had not finished telling der frace when in front of us at a distance of about 200 meters and a height of about 50 meters I like two lights flashing and apparently our dierccin. We looked at the faces, we did not say a word and went .The issue never touched. I have continued my studies and I have many answers to doubts and wrong beliefs, if you are interested in is the can communicate. I hope your answer tell my mail.