Donuel, I also saw a vehicle that suddenly crossed half the sky from a motionless start and vanished over the far horizon in about 2 and a half seconds. Absolutely incredible speed. I don't think it was "one of ours". It was silvery, round, the typical "flying saucer" shape that is often spoken of. It had no visible engines or exhaust or other such features, caused no sonic boom, and made no sound whatsoever during its flight.