For the past 40 years studying the UFO in the world has a lot of messages about UFOs, which cannot be assessed otherwise than striving for a certain kind of contacts with people. Below are the exchange of light signals between people or vehicles, on the one hand, and UFOs.

In November 1954 in New Lisboa (Angola) three witnesses, who was riding in a car, he saw approaching him at the height of 50 m big glowing saucer-like object, from which the machine was directed three of the light ray. Frightened by this phenomenon, the driver turned onto a side road, but UFO followed machine. Then the driver decided to give him a signal, quenching and turning on the headlights. In response to this UFO immediately turned out all my lights except one spotlight, which began to fade might work in that mode, as the headlights of a car. After a while UFO disappeared.

In March 1967 in Chemokine (Pennsylvania) Forester, Kerstetter with his wife, who was riding in the car, saw flying over them object with the next lights. Then they stopped the car, and Kerstetter filed a flashlight signal: three short flashes one long. In response to this large lower lights UFO repeated this signal five or seven times. In July 1967, in Newton (state neo-Hamner) bottom former radar operator observed through a telescope glowing object of the oval form with lights at the ends and in the middle. One observer three times blinked his electric lantern, and the object would have answered him three flashes its lights, And this exchange of signals was repeated four more times. Then the observer began to make a lantern in one long and one short flash, and the object is answered in the same way. The same happened when he began to make a series of four outbreaks. Then UFO flew away.

Similar cases occurred in 1957 in Illinois and in Wyoming, and in 1969, on the highway from Eskers in Gothenburg (Sweden). In the example below, there was an exchange of signals between the ship and UFOs. In 1970, the team members of the Polish ship "Kopalnia Walbrzych" , located in the Mediterranean sea, between Valencia and Mallorca island, was observed followed by the vessel huge object with a vertical shaft of light. When the ship were submits his side five light and sound signals, the object answered them five glimpses of the side lights, accompanied by five strange deaf sounds, and then disappeared. UFO exchanged signals with the aircraft.

In October 1955 in San Bernardino (California) pilot blinked twice landing lights of an airplane and flying near UFO answered as well. Then the pilot three times blinking lights, and UFOs did the same, then turned and disappeared. In January 1977 the aircraft Colombian airline at the altitude of 6 km met with great UFO moving at high speed. Pilot Ferreira included landing lights his plane, and UFOs changed the color of the lights from green to red. And when Ferreira turned off the landing lights aircraft UFO has changed PA original color.

on February 11, 1988, UFO in the form of a parachute with three powerful sources sung before the eyes of thousands of eyewitnesses hanging for more than 3 hours at a height of 3000 m above the city of Beira (Mozambique), and when approaching him passenger plane twice turned and turned off my two spotlights, the object as if in response, jumped up and flew away to the South. According to head JAPAN Claude Sharp, by 1976 was registered six cases when UFOs answered given to them by light signals. Sometimes witnesses had the impression that UFOs even fulfilled their requests.

In August 1977 in the Bermuda triangle pilot Columbia aircraft encountered a UFO, passed on the radio, so that it went up, then went down and approached the plane, if this message, it is clear. To the surprise of the pilot, UFOs have done these exercises, flew up to the plane and went next. In the transfer of Spanish television in may 1989, the pilot company "Iberia" Ignacio Lorenzo was told of a story that happened to him in 1988, during the flight towards Alicante. Their plane was approaching at high speed unknown glowing object in the form of a huge eyes and stopped at a distance of 10 m from the aircraft, after which accompanied the plane for 5-6 minutes. Trying to deal with this object Lorenzo began to give him the signal Board lights the plane, and then turned to him on the radio with the request that the object gave him some signal, if he understood the request and configured friendly. In response to this object winked.

The third case described in the letter of witness L, submitted to the Central Commission for anomalous phenomena. It happened in August 1972, near the village of the Brigham (Latvssr), where one of the three witnesses who saw the unknown flying object size is three times more than the visible disk of the moon, the voice began to give him commands, "Stop" , "Fly closer" , "Stop" , "Fly back", "Stand" , and the object each time they were made. And check this case by questioning of a witness and his companions are no grounds to consider it fraud.

Of special interest are the cases when people somehow received in advance predictions about the place and exact time of the appearance of UFOs, and then those predictions have come true. Best known story of what happened in the Portuguese village of Fatima, located 80 miles from Lisbon.

on may 13, 1917, three children from this village have sheep and saw the soaring transparent ball, from which came a figure dressed in white clothes, and told the children that will come to this place on the 13th of in the same hours and will talk with them. on June 13, Yola and 13 August together with children in this place, they were already thousands of people wanting to see the "miracle" , but none of them could see nothing but some kind of white cloud, while the children said that the figure appeared and promised them 13 October to make a great miracle. on September 13 at the appointed hour was about 30 000 people, and on their eyes on this place down glowing ball that after 10 minutes, got up and left. The children argued that again was talking to this figure.

The most amazing thing happened on October 13, when waiting for a miracle was about 70,000 people, including newspaper reporters and representatives of the higher clergy, and even members of the government. It was raining. In precisely the time in the sky appeared a rapidly rotating disk which emitted rays of different colours. This CD-zag path dived into the crowd, which fell to her knees, and swept over her at low level flight so that the waves of hot air dried on people's clothes. The disc again went up, sending to the earth rays, zavershilsya faster and jumped up and down, then again swept over the terrified people and again climbed. Such maneuvers lasted for 10 minutes, after which the drive disappeared in the clouds.

This event, known as "the miracle in Fatima" was happening in front of 70 000 eyewitnesses, he was thoroughly investigated. There are a number of books. A similar case occurred in April 1950 in the village of Casalecchio (Sicily), where an unknown figure told the girl that 14 hours April 15, she does the sign. Indeed, in exactly the appointed time before the eyes of thousands gathered witnesses appeared object the size of the visible disk of the Sun, which began to rotate it to the right, then to the left, shining with different colors, and then a zig-zag path closer to the Ground, and then, jerking irregular, rushed into the sky. Moreover 2.5 hours this phenomenon was repeated (Daniken E. Erscheinugen. Dusseldorf; Wien, 1988).

In orange Professor of German language Lyceum, being hypnotized, reported that after three days, between 23.00 and 24.00, in Saint-Gilles happens landing several UFOs. To verify these data chaplain M from the air force base in Vaucluse with seven witnesses came to this time in Saint-Gilles and, indeed, saw the big blue ball with four balls less, which began to decline. But witnesses got scared and left.

In the foreign press cited the message of the press Agency Kyodo Tsushin, according to which a resident of Hiroshima Tae Asano in 1978, three times predicted the appearance of a UFO, and all her prediction was confirmed. These cases indicate that UFOs may be able in some way to deal with individuals. The analysis of such cases leads to the conclusion that in case of any attempt on their part need not afraid of it, and go to such contact.

Manifestations of reasonableness in the behavior of UFOs were observed for many years in a variety of categories of observers in the different parts of the globe, that, undoubtedly, testifies to their reliability, moreover, that in recognition of the reasonableness of conduct UFO and do not need to absolutely all messages of this kind was reliable. For this purpose it is enough only few reliable facts. Only purposeful maneuvers UFO around of aircraft and ships, has repeatedly observed, their crews and passengers, if we can trust them, already show that these objects are not spontaneous and chaotic.

And how to treat cases of predictions about the places and the exact time of the appearance of UFOs, after which thousands and tens of thousands of witnesses, gathered at the appointed time, has convinced in the accuracy of these predictions! All these facts it is difficult to explain otherwise than by the recognition that the behavior of these objects, apparently, is hiding some intelligence. Recognition of reasonableness of conduct UFO contained and notwhich official documents are published in a number of countries.

In the report of the head of material and technical supply the U.S. air force Lieutenant-General of Tuininga in 1947 directly stated that "the high rate of climb UFOs and their ability to produce complex maneuvers and get away from fighters suggest that some of them are operated manually, automatically or at a distance". In the textbook the Academy of American air force, "Introduction to science about cosmos", published in 1968, is also quite definitely stated that UFOs are material objects, which are either crew or are managed in the distance.

Well-known American researcher UFO Professor A. Hynek at the meeting of the Special political Committee of the United Nations in 1978, also said that the experience of the study of UFOs seem speaks in favor of the manifestation of some form of reason, the origin of which science is still unknown. A similar opinion was expressed at Tallinn International Symposium on search of intelligent life in the Universe V, Soviet astronomer L. M. ghindilis, who stressed that some features UFO suggest their reasonable nature. And may be it is the presence of elements of rationality of behavior in a flying object is the main criterion, allowing to relate it to the number of "true" UFO. The second criterion may be the availability of certain unusual properties. Therefore, if an unknown object just flies in a straight line or at the direction of the wind, it can hardly be attributed to the number of UFOs. But, if this object does some maneuvers, hangs, plans and out of pique, accompanies or flies planes and ships and react to their actions, then, this seems to be the "true" UFO - one that we should be interested in.