Rectangular Gray Object Seen over Atlanta GAI was exiting the Wachovia Bank at 2942 N Druid Hills Rd NE Atlanta, GA 30329, across from the Toco Hills Shopping Center at approximately 14:05, facing SW. It was an overcast day, with intermittent showers. As I was opening my umbrella, I noticed something in the air. Looking carefully, I see a boxy, rectangular, dark gray shape tumbling through the air. There was no sound coming from it, and it appeared to be a long way away. It, for all intents and purposes, looked like a bag inflated with some lighter than air gas that had been released, and yet it did retain its shape rather well. I reached for my digital camera in my pocket, and took three pictures (I will include these as attachments). I also took a short video clip (about 1:01), but nothing was obvious when I watched it later. Approximately 3-4 minutes after I first sighted the object, it disappeared into the cloud cover.I must say that I may not be the ideal witness for such an event. I am a science fiction fan, as well as an amateur digital artist. I have also been described as, " slightly out of touch" with reality. However, I do not make up stories like this. I am not a glory hound, nor do I believe that aliens visit our planet. Based on our present understanding of physical law, visiting even a relatively near star (like, say Alpha Centauri, 4.3 LY away) would be a tremendous undertaking. So, my personal beliefs belie an extraterrestrial origin. However, It was definitely something that was flying, and I have no idea what it really was, therefore it meets the requirement of being a UFO, in my book.