I was leaving work and I seen a circular object that was shining in the raising sun light flying south. I thought it was a plane but it just didn't look right, too round. I thought it might be a star but it was moving, then it disappeared. I got in my truck and dismissed it but then I saw it again and it made a U turn and went back the other way. I am not an expert but I have never in my life seen a plane turn around on a dime like that.