My wife and I were returning to Fort Benning Georgia on hwy 280, from visiting my grandmother in Cordele Georgia. I was a major in Army medical corp. We had our one year old in the car. We were the only car on the road then at 11pm or so. We saw an orange orb or ball of light coming over the trees from the right of the road. We were both alarmed immediately and yelled out. I slammed on brakes to avoid going right under it. It appeared to be 100 feet ahead and about 30 feet in diameter with the bottom of it about 40 feet over the road. I backed up some. We were scared. The orange orb appeared glowing and uniform without sound or other features. It appeared to be moving steadily at about 1 mph and we observed it for about 2 minutes before it disappeared over a line of trees about 100 feet from the road to the southwest. It always appeared to be about 40 feet over the road. When it was gone from sight we sped out of there towards Columbus, thoroughly shaken up, discussing what we had seen. We had no explanations, just fear and thankful that we were safe. We checked the news but it was not in the papers, and perhaps no one else had seen it.