I was preparing to take my grandson to school, when I noticed what I at first thought was a plane because it was leaving a trail behind it. But I then noticed it was not a plane-it had no wings. As I watched it, it began to change shape, it started to shrink length-wise until it was more like a square. But the square seemed to be composed of 2 separate sections. After a couple of minutes, it flew out of sight.(right before I saw the rectangle, I saw an orb-separate report).