We present below a list of testimonials, which then try to draw some conclusions.

• 16 October 1954 : Robert Enrico, around Baillolet (North of France), sight 4 items, one of which is lowered a short distance from the earth reaches 50 meters from his vehicle when suddenly the car is stopped and all electrical went out of use. All spontaneously returned to work when the UFO moved away along the escarpment.

• 3 July 1955 : An unidentified flying object was sighted in the Tierra del Fuego and Antarctica, the commander Mario Barrera reported that its passage has interfered with the electromagnetic .

• 1957 A Mogi Mirim (Brazil) the lights is extinguished only along the trajectory followed by three discs of light, l ' intensity of current also varied depending on the distance from the wake. After the aircraft lights are riaccesero.

• 2 August 1958 : Rome fail light with much of the city while a OVNI over the city, everything went away to work properly.

• May 15, 1961 London remains without current , Had been spotted flying objects of unknown origin.

• 18 April 1962 : A glowing red object is detected by U.S. radar from New York all'Utah up when a fly power it temporarily stopped working.

• 23 September 1964 A hard driving, photographed by several witnesses, over Cuernavaca (Mexico), caused several interruption of electricity .

• 4 December 1965 : El Paso and Ciudad Juarez are without electricity from 21:58 to about two hours later in the day had been reported the existence of UFOs.

• February 1967 : UFO flying over the American bases in Alaska for over an hour, in the contemporary generators Barrow Bridge to stop working.

From all these (and many others) the warning related to electrical phenomena, it can be assumed that UFOs affect more or less seriously the smooth functioning of electrical circuits automotive alternators for power, but also signal transference of electricity power lines in towns. One explanation could be that these devices employ a method of magnetic propulsion : The energy would be issued to cause electromagnetic effects on systems in the area.