Hovering circular object with lightsWalking out of the grocery store heading back to go to my car. Two ladies were standing there, pointing and I looked up at what they were looking at--a circular object with four lights. It was hovering almost directly overhead, and we were facing south. It made no sound, and had four lights--two were green, and the other two flashed from white to red and back.They said they had watched it for not quite five minutes, and we watched it for three or four more minutes before it turned a couple of times, descended, ascended, then shot off to the northwest.I ran, following the direction it went, and I went round the corner of the building, continuing to watch the object streak off before it just disappeared.