One of my dogs became agitated at about 3:45 am. I thought there might be deer in the yard so I looked out the window. A rare morning with clear skies. I have the ISS app and was going to check to see if the space station was going to pass overhead when I saw this bright flash in the lower south east sky. Never saw anything like it. It only lasted a few seconds and disappeared in the southeast horizon. Very exciting. Now I can't get back to sleep. It IS amazing out there.