The investigation brought out a few more points on the pro side too. We found out that the UFO's frequently visited Washington. On May 23 fifty targets had been tracked from 8:00 p.m. till midnight. They were back on the Wednesday night between the two famous Saturday- night sightings, the following Sunday night, and again the night of the press conference; then during August they were seen eight more times. On several occasions military and civilian pilots saw lights exactly where the radar showed the UFO's to be. On each night that there was a sighting there was a temperature inversion but it was never strong enough to affect the radar the way inversions normally do. On each occasion I checked the strength of the inversion according to the methods used by the Air Defense Command Weather Forecast Center. Then there was another interesting fact: hardly a night passed in June, July, and August in 1952 that there wasn't an inversion in Washington, yet the slow-moving, "solid" radar targets appeared on only a few nights. But the one big factor on the pro side of the question is the people involved--good radar men--men who deal in human lives. Each day they use their radar to bring thousands of people into Washington National Airport and with a responsibility like this they should know a real target from a weather target. So the Washington National Airport Sightings are still unknowns. Had the press been aware of some of the other UFO activity in the United States during this period, the Washington sightings might not have been the center of interest. True, they could be classed as good reports but they were not the best that we were getting. In fact, less than six hours after the ladies and gentlemen of the press said "Thank you" to General Samford for his press conference, and before the UFO's could read the newspapers and find out that they were natural phenomena, one of them came down across the Canadian border into Michigan. The incident that occurred that night was one of those that even the most ardent skeptic would have difficulty explaining. I've heard a lot of them try and I've heard them all fail. At nine-forty on the evening of the twenty-ninth an Air Defense Command radar station in central Michigan started to get plots on a target that was coming straight south across Saginaw Bay on Lake Huron at 625 miles an hour. A quick check of flight plans on file showed that it was an unidentified target.