Unknown bright blue object in the sky that subdivided into two bright blue objects

At approximately 1:55 a.m. on Saturday, September 9, I decided to head off to bed after watching television. I am a night owl, so it is normal for me to be wide awake late into the evening and early morning hours. Upon laying down and looking directly out an open west window one foot away from the bed, I noticed an unknown object with intense bright blue light surrounding it flying erratically using sudden darting movements high in the sky west of Hinckley. I immediately got out of bed and watched it maneuver for the next 15 minutes. I couldn't take my eyes off of it. The most stunning movement was how it literally appeared to fall or drop from the sky at blinding speed. But then it then came to a complete stop and remained in one place. It darted back up into the sky, and in general continued to dart at will around the sky west of Hinckley. Occasionally, the object would completely disappear and then suddenly reappear a few seconds later. The night was clear with no clouds, so there was nothing to obscure the object from visibility.
The next thing that occurred was simply amazing! As it started to move east across Hinckley on the north side of town, the object suddenly became TWO unknown objects, each surrounded with bright blue light. Together, in absolutely precise tandem, they flew to the east at high speed. In order to continue watching, I had to quickly run from the west side of the house to the east side. When I arrived on the deck on the east side of the house, the two objects had either blended back into one, or one of them had left the area. The remaining blue object then flew out of sight south of Hinckley. Absolutely stunned by the unbelievable sharp turns it would make at high speed, I continued to remain on the deck waiting to see if it might return. And it did! It flew back from the south where it had previously gone and proceeded further east. I did not see it again although I continued to monitor the sky for quite some time after.
I'll do my best to try to describe the speed at which this object moved. Imagine using your finger to point up into the sky on the west side of Hinckley. Then quickly swing your finger all the way to the east side of Hinckley. In about one second the object moved across the Hinckley sky before coming to a complete stop, changing direction, and flying off again. When it suddenly dropped from the sky at the beginning of the sighting, it happened so quickly that I thought it was going to hit the ground. But no, it simply stopped mid-air before it decided to dart off into another direction.
The objects were incredibly easy to see in the sky due to the intensity of the blue light surrounding each of them. For as high into the sky as they were, they must have been fairly large objects to be seen so easily from my location on the ground. I thought about alerting the local police of the sighting, but I simply didn't want to take my eyes away from what I was viewing as I may never see something like this again in my lifetime. And since I imagine a sighting such as this would be perceived as unbelievable, I decided to report what I saw on this website instead. I have never reported, nor experienced, anything such as this ever before.