Fortunately the man who had done the most extensive work on the incident, Dr. J. Allen Hynek, head of the Ohio State University Astronomy Department, could be contacted. I called Dr. Hynek and arranged to meet him the next day.

Dr. Hynek was one of the most impressive scientists I met while working on the UFO project, and I met a good many. He didn't do two things that some of them did: give you the answer before he knew the question; or immediately begin to expound on his accomplishments in the field of science. I arrived at Ohio State just before lunch, and Dr. Hynek invited me to eat with him at the faculty club. He wanted to refer to some notes he had on the Mantell Incident and they were in his office, so we discussed UFO's in general during lunch.

Back in his office he started to review the Mantell Incident. He had been responsible for the weasel-worded report that the Air Force released in late 1949, and he apologized for it. Had he known that it was going to cause so much confusion, he said, he would have been more specific. He thought the incident was a dead issue. The reason that Venus had been such a strong suspect was that it was in almost the same spot in the sky as the UFO. Dr. Hynek referred to his notes and told me that at 3:00P.M., Venus had been south southwest of Godman and 33 degrees above the southern horizon. At 3:00P.M. the people in the tower estimated the UFO to be southwest of Godman and at an elevation of about 45 degrees. Allowing for human error in estimating directions and angles, this was close. I agreed. There was one big flaw in the theory, however. Venus wasn't bright enough to be seen. He had computed the brilliance of the planet, and on the day in question it was only six times as bright as the surrounding sky. Then he explained what this meant. Six times may sound like a lot, but it isn't. When you start looking for a pinpoint of light only six times as bright as the surrounding sky, it's almost impossible to find it, even on a clear day.

Dr. Hynek said that he didn't think that the UFO was Venus.

I later found out that although it was a relatively clear day there was considerable haze.

I asked him about some of the other possibilities. He repeated the balloon,

I drove back to Dayton convinced that the UFO wasn't Venus. Dr. Hynek had said Venus would have been a pinpoint of light. The people in the tower had been positive of their descriptions, their statements brought that out. They couldn't agree on a description, they called the UFO "a parachute," "an ice cream cone tipped with red," "round and white," "huge and silver or metallic," "a small white object," "one fourth the size of the full moon," but all the descriptions plainly indicated a large object. None of the descriptions could even vaguely be called a pinpoint of light.

This aspect of a definite shape seemed to eliminate the sundog theory too. Sundogs, or parhelia, as they are technically known, are caused by ice particles reflecting a diffused light. This would not give a sharp outline. I also recalled two instances where Air Force pilots had chased sundogs. In both instances when the aircraft began to climb, the sundog disappeared. This was because the angle of reflection changed as the airplane climbed several thousand feet. These sundog-caused UFO's also had fuzzy edges.

I had always heard a lot of wild speculation about the condition of Mantell's crashed F-51, so I wired for a copy of the accident report. It arrived several days after my visit with Dr. Hynek. The report said that the F-51 had lost a wing due to excessive speed in a dive after Mantell had "blacked out" due to the lack of oxygen. Mantell's body had not burned, not disintegrated, and was not full of holes; the wreck was not radioactive, nor was it magnetized.

One very important and pertinent question remained. Why did Mantell, an experienced pilot, try to go to 20,000 feet when he didn't even have an oxygen mask? If he had run out of oxygen, it would have been different Every pilot and crewman has it pounded into him, "Do not, under any circumstances, go above 15,000 feet without oxygen." In high-altitude indoctrination during World War II, I made several trips up to 30,000 feet in a pressure chamber. To demonstrate anoxia we would leave our oxygen masks off until we became dizzy. A few of the more hardy souls could get to 15,000 feet, but nobody ever got over 17,000. Possibly Mantell thought he could climb up to 20,000 in a hurry and get back down before he got anoxia and blacked out, but this would be a foolish chance. This point was covered in the sighting report. A long-time friend of Mantell's went on record as saying that he'd flown with him several years and knew him personally. He couldn't conceive of Mantell's even thinking about disregarding his lack of oxygen. Mantell was one of the most cautious pilots he knew. "The only thing I can think," he commented, "was that he was after something that he believed to be more important than his life or his family."

My next step was to try to find out what Mantell's wing men had seen or thought but this was a blind alley. All of this evidence was in the ruined portion of the microfilm, even their names were missing. The only reference I could find