In 1955, I lived in Holbrook, Massachusetts. I lived in a town next to the South Weymouth Naval Air Station. On the day I saw the UFO, it was a sunny spring day and I was in a ballfield behind my home. I turned around and over the trees was a large yellow object shaped like a football without the tips on the ends. It was there a short time - a minute or less and did not move. It went out like a light but faster. Then, over my right shoulder, a Navy Constellation radar plane went toward where the object had been. I have seen many jets and blimps go over the area many times and this object wasn't like any aircraft I've ever seen. At the time, I was seven years old.