Those UFOs that could be seen up close amazed observers not only by the very fact of their existence, but also by those specific features that make them unlike terrestrial technology. The most often mentioned is the unusually smooth surface of a UFO, the complete absence of joints and seams on it (even a door or hatch, if they were on the UFO, did not stand out at all on the surface). As for other structural details, it is quite often reported about antennas, landing gear, ladders, etc. It was reported about UFOs equipped with a lifting device, descending after the object hovered above the ground. Probably, this structural detail speaks of some specific function of those UFOs that were observed in 1965 in Minnesota, and in 1967 in Nebraska and again in Minnesota.
Reports of windows and other holes on the surface of UFOs are also not rare. Most often, these holes are round or rectangular, less often they are irregular. Similar holes have been observed on various types of UFOs, but most of all on UFO fuselages. Here they are usually arranged in a row of 4-5 pieces on each side. Some observers were able to look through the windows and into the apparatus themselves. They mention chairs, benches, tables, lamps, control panels. But the most interesting, in our opinion, is the principle of UFO movement, which is not similar to anything we know.
Typically, the flight path reported in UFO reports is sinusoidal or wavy. It seems that the UFO, regardless of the flight altitude, flies, diligently noting all the details of the terrain over which its route passes. Another very important and interesting detail noted by observers is the extremely sharp maneuvering of the UFO. At great speed, objects make turns almost at an angle of 90 ° and, as if nothing had happened, continue their flight at a very high speed: "three times faster than a jet plane."
At the same time, the flight of a UFO, despite such a high speed, is practically silent, although there are reports of very loud sounds made by UFOs, but we will talk about this later, since these are still exceptions from the total amount of information about unidentified flying objects.