Huge triangle with three smaller saucers at the angles and a command station in the center, lingers above farm house for 15 minutes.

we lived on an isolated farm, this craft came flying over the house at a very slow speed, it was massive and may have been 200 ft above us. It was in shape of a triangle, with round lights along each angle. It flew away at a slow speed for around half a mile. I ran inside the house and started flashing the outside lights and the ship stopped in mid air turned around and came and stood over us for around 4 minutes. I saw in the center of the ship what looked like a comand center and people looking down, one of the smaller round objects detached itself from the ship and flew away from it maybe 100', by then my mother and brothers were all scared and they ran iside the house. The smaller round ship re-attached itself to the main ship and then flew away at the same low speed. This object was seen once more last year in the same location, Moca, Puerto Rico, by my sister.