We live at 7,000' elevation. Bright blue sky with puffy white clouds about 2,000 elevation. I have never seen an airliner fly over in the north. Saw this silver object fly out of one white cloud into another. I expected to see it fly out of the opposite end???.instead it flew out where it entered and back into the first cloud. It never appeared again. Other events???... I saw one of these 180 turn arounds with the same type of aircraft in 1952 with my Dad. He also saw it and said it was a tricky fighter jet developed to fight in the Korean War. I witnessed the 1966 UFO sighting over downtown L.A. that was featued in the LAX Tower scene in "Close Encounters". Several incomming airline pilots, the Tower and a bunch of us at USC saw it around 5pm. Sailed over 3 100' diameter blue green discs on a foggy May night at midnight on the way to Catalina Island. They were several feet below the surface and lit our boat like a phosphorus shake stick. 5 us were on the boat as witness.