I am unsure of the date, I put in the date as a guesstimate for this reason.
I do know it was early summer in the early 1950s.
I was about 10 years old at the time.
I was outside on the front lawn of our home below the foothills in western Wenatchee, Washington.
My mother was doing yard work and both of my sisters, one younger/one older, were outside as well.
We looked up and saw a shiny, silver colored saucer shaped object zoom across the sky at a high speed, southeast to northwest.
It was clearly visible.
It must have been fairly close or large, hard to estimate now.
I remember that we all stopped and watched it.
One of us asked my mother:
What is that?
She responded:
Oh, that must be one of those flying saucers we've been hearing so much about.
A few seconds after the object disappeared over the horizon, a jet plane zoomed over in the same direction.
That's it, it's a very clear memory for me and my sisters.
Our mother passed in 1962.