Witness Account

I was standing on my porch looking southwest up at the sky, as I always do, around 6:15-6:30. I saw a light thinking it was another airplane.The sky had few clouds so was easy to see. It was moving faster than normal, did a u turn just as fast, swooped up and down 2 times and just disappeared. I was thinking that it was going to crash but nothing, just vanished!! I have watched planes for years and never EVER saw anything like this before. Not even helicopters menevor like that!! Still in shock!!