U.S. Air Force Analysis of Flying Objects in the United States, 1-100

Dr. W. R. Giesbrecht and F. W. Sawatsky going north on the highway between Grosse Isle and Warren about 0530 hours 13 Oct when they saw a green coloured object cross the sky. They estimated its distance ahead of them at about two miles and its altitude at about 1,000 feet. Its shape and size was that of a soccer ball. They watched it about 30 seconds and while they heard no noise the windows of the car were closed. It appeared to have a tail of green coloured sparks and they assumed it to be a flare shot at a very gradual angle and from a south-south-west direction. Toward the end of the 30 seconds it appeared to dip toward the ground and to go out before it would have struck the ground.