The Triangle over Live Oak

This happened a long time ago. I was about 14 years old and it was a warm summer day and I was sitting on the front porch about 1:00pm. I noticed that it seemed to get very quiet that not even the birds could be heard. I stood up and looked out and noticed a dark triangular something flying over the house. It had white flashing lights on each point and a bright, smaller red on dead center of the craft. But there did not seem to be any other openings or any other lights on the craft. It was made of a black plastic looking material. Nothing like had seen before or have seen scene, and I was a Security Police Specialist in the US Air Force.
It was back before cable and we still had an antenna and the thing was about 2 or 2 feet above it but there was not even the slightest sound. It seemed to be going so slow I thought that it was going to fall on top of our house. It was about 40 yards long and took forever to pass overhead.
When it was gone I ran inside and ask my Mother if she seen what just went over but she said she did not. Then later that day the boy from across the street came over and he asked if we had seen it. He was behind his house watching it pass over.
It seemed that no one but us two had seen anything. We ask everyone in town and then in school the next couple of days and now one had seen it or no one had claimed to have seen it.
Date may be approximate, although the witness does not indicate that fact.  PD