I agree, in general, with the comments by Sisyphus; however, I don't think it applies in my case. I was an A student, National Honor Society member, didn't use drugs, a keen observer with an analytical mind, and not one to give in to delusion or hallucination. In fact, later in the military, I used those skills to analyze and identify objects. (for ex. missle, aircraft, Russian, NATO?)
No, it wasn't a balloon. The object was not far off in the distance, but almost directly above me, about 80 degrees (90 being straight above). It was a perfect sphere with no protrusions of any kind and left no trail. It was a glowing light-blue and easy to discern even with the blue sky background. It flew a straight horizontal course at a constant speed and did not bounce up or down. It had to have a means of propulsion and was guided by some intelligence. Think about the laws of physics and you will come to the same conclusions.
The only question is whether I'm lying or perhaps delusional. If I were delusional I don't think I would have had a Secret Clearance in the military later, and I would never lie about such a thing. I've since read many stories about UFOs and I hate hoaxes. BTW, I did see virtually the same object on a TV show once, possibly the show "In Search Of." In the video the blue spherical object was flying at either dusk or dawn over some trees. It was taken from a profile view perhaps from a hundred feet away.
I was born in Dayton, Ohio and have visited Wight-Patterson AFB several times, but just briefly on official business. I talked with someone that told me that there were tests going on around that time period at Wright-Patt, but I don't know how reliable that information is.
The swallows comment is hilarious, I like that. But on a serious note, does anyone know what this was or have possible explanations? Possible recon device? I guess what I really want to know is the origin of the object.
I don't really believe in aliens or mysterious life forms and I know it wasn't celestial at 100 feet in altitude. So, I guess I really have most of the answer by the process of elimination. I guess those that know exactly what is was can't divulge that information. Thanks again.