Argentina: The Rio Negro Blackouts (1998)

Inexplicata-The Journal of Hispanic Ufology: Argentina: The Rio Negro Blackouts (1998): "One witness even said that a “mothership” – larger than the rest – led a formation over Cerro Leones and that smaller ships pulled into it, producing sparks s they did so. He pointed out that the maneuver occurred at least twice, coinciding with the successive brown-outs and blackouts all over the city."