Was sitting on the other side of bay face to Theoule sur Mer. just on top and behind Theoule there's large national park with small mountains. We was sitting in restaurant plage and observing fireworks. On the mountain there's small red light fo rplanes and helicopters cause there's an aeroport and heliport just close. During the fireworks I mention large 3 red light triangle on top of mountain going as fast as helicopter. I didnt took serious thinking maybe it's a fire-guys helicopter (there was few large forest fires not long ago but far from this place). but after i thought that it's imposible to be this big, more size of big plane. it was moving at the same spead straight direction from sea north-west; very low almost touching the tops of mountains. I can't really tell how long it was there and where it go because after 5-10 min it dissapeared behind one mountain.