I photographed this object moving in a straight line at ridiculously fast speed. The object made no noise. I also photographed an airplane flying in the same area and at the distance I could hear the engine noise. A military recon plane did a loop over the area as well, and I could hear fighters in the area but could not see them or direction of flight. If any plane experts here can tell me what you might think this object was, and how can something fly so fast without making any notable sound.