UFOs and electrical jamming.

Through most UFO sightings of the second kind, there are reports of eletrical devices just stopping while the craft is near. The reason for this is something I would like to explore into. Does anyone have any information on this or even theories (if they are theories, please say they are)?

To me this doesn't fit with a UFO's anti-gravity. But I could be mistaken. More likely to me, it might be a sort of defense mechanism. But of course these are just theories of mine.

Please give me your thoughts.

Some say that a UFOs anti-grav engine produces an EM field around the area. Some say that the UFOs have an EMP device for defense purposes, for example when fighter jets attempt to fire a missile at a UFO the jet suddenly loses power.

That is usually what has happened. A jet flies up to them and they lose power. All kinds of cases like that turn up. I too think of it as a defense mechanism.

Any more comments?