The colonel had hit the proverbial nail on its proverbial head.

Then he went on, "Everyone has a different idea of what proof really is. Some people think we should accept a new model of an airplane after only five or ten hours of flight testing. This is enough proof for them that the airplane will fly. But others wouldn't be happy unless it was flight-tested for five or ten years. These people have set an unreasonably high value on the word 'proof.' The answer is somewhere in between these two extremes."

But where is this point when it comes to UFO's?

There was about a thirty-second pause for thought after the colonel's little speech. Then someone asked, "What about these recent sightings at Mainbrace?"

In late September 1952 the NATO naval forces had held maneuvers off the coast of Europe; they were called Operation Mainbrace. Before they had started someone in the Pentagon had half seriously mentioned that Naval Intelligence should keep an eye open for UFO's, but no one really expected the UFO's to show up. Nevertheless, once again the UFO's were their old unpredictable selves—they were there.

On September 20, a U.S. newspaper reporter aboard an aircraft carrier in the North Sea was photographing a carrier take-off in color when he happened to look back down the flight deck and saw a group of pilots and flight deck crew watching something in the sky. He went back to look and there was a silver sphere moving across the sky just behind the fleet of ships. The object appeared to be large, plenty large enough to show up in a photo, so the reporter shot several pictures. They were developed right away and turned out to be excellent. He had gotten the superstructure of the carrier in each one and, judging by the size of the object in each successive photo, one could see that it was moving rapidly.

The intelligence officers aboard the carrier studied the photos. The object looked like a balloon. From its size it was apparent that if it were a balloon, it would have been launched from one of the ships, so the word went out on the TBS radio: "Who launched a balloon?"

The answer came back on the TBS: "Nobody."

Naval Intelligence double-checked, triple-checked and quadruple- checked every ship near the carrier but they could find no one who had launched the UFO.

We kept after the Navy. The pilots and the flight deck crew who saw the UFO had mixed feelings—some were sure that the UFO was a balloon while others were just as sure that it couldn't have been. It was traveling too fast, and although it resembled a balloon in some ways it was far from being identical to the hundreds of balloons that the crew had seen the aerologists launch.