3 GRAY CRAFTS SEEN BY 4 PEOPLE IN MONTEVIDEO, URUGUAY.To whom it May concern, I want to report the sighting of three unidentified flying objects tonight, 27.09.15, during the lunar eclipse in the city of Montevideo. There are 4 direct witnesses. The phenomenon occurred between 22:50 and 22:55 and lasted no more than 10 seconds.Three oval objects appeared flying in formation changing course and altitude abnormally, they had no lights, lost sight heading south. I have enough aeronautical knowledge to confirm that there was no drone or aircraft of any kind because of the speed and type of maneuvers. The ground fault interrupter disconnected electricity about 4 minutes before the event (maybe this is a coincidence).Thank you.