Observed A Pure White Ball
While serving as a military pilot in Germany, 1969 to 1970, I lived in a high rise apartment building.Standing next to an open window, I observed a pure white ball, approximately the size of large grapefruit or small basketball, which entered my field of view on the left and flew without, hesitation, in a perfectly straight line, to my right without any making any sound, and then left my field of view. I estimate the speed at approximately 100 mph, and I am sure of the size because the object passed between where I was and an adjacent building located 200' away. I could hear chilren playing below, and know the object made no sound.