We didn't arrive in Gettysburg until dark, but since Sachs Bridge was on my list of things to do at night, it was our first stop. When we arrived, it was pitch black and very difficult to see anything. So, after a short while, we decided to leave and come back the next morning to enjoy the beauty of the bridge in the daylight. As I was walking away, I quickly turned around and took the attached picture, capturing what appears to be an orb. I immediately took another picture to compare, but the image was not on the second picture. You decide.