A summer all day party at my Aunt & Uncle's lakeside cabin.They had a very sturdy larger dock.
My grandmother had the house 3 or 4 lots West and in the North side of the lake, but did not have a dock over the water, so we were here frequently there in good Seattle weather.
The party was here, as it had the best dock, both dock/lots are are visible on Google maps.
I was 8 years old, and had 3 older brothers, 1 younger brother.
My older brothers taught me things early as exposed to their bad behaviors.
So I was aware.
We had many family. cousins, and close friends at the party, it started at noon and lasted until midnight.
My oldest brother was extremely smart for his age.
After dinner most of the mom's were inside cleaning, I was reading Archie comic books, not allowed outside near the dock or water as I had not learned to swim yet.
After 9:00 p.m. my oldest brother and many cousins, male & female, were all sitting on the dock, all 12 or 13 years old.
Another Uncle was a Seattle police officer, his buddies and wives, drinking, smoking and so forth.
Older relatives, most were outside, as in Seattle area back in the 1950s/1960s August was the best month for this, or it would have been raining.
My oldest brother started shouting UFO UFO, quick or to that effect.
Everyone inside the house ran to the dock area and kids there were all pointing and directing us to look up.
My recollection was that the light was in the outer atmosphere, very high, and was moving very very fast, and we had horizon to horizon view looking up and to the West, wide view.
The white light would zigzag, and the strange part to me, that I remember, was the flow was like if you are watching speed skating during the Olympics, and if you've seen how the skater on long track skates, the skater flow is left leg, right leg, left leg. right leg continually kinda back/forth and this is what the light was doing zigzagging left/right but moving fast, and when the left/right zigzag was right in the middle, the light would dim just a bit.
So we all watched this light head West at a high rate of speed, 5 minutes towards the horizon and it was gone.
Everyone was chatting, UFO this, UFO that.
I headed back in with Mom and the other ladies, I sat on the couch reading comics, again, and my oldest brother again a quick outside, another UFO, hurry.
We all ran outside and the same exact thing we saw first, a UFO very high speed zigzagging through the outer atmosphere same line of sight and same speed.
Funny part was that stuck with me was were were all in the same spot on the 2nd sighting.
This UFO also all the way West until we could not see it.
That was it. No Sound.