Powell, Wyo - 3 round fireballs going over our home traveling from south to north 07/05/1973

At the time I saw the 3 UFO’s I lived in Powell, Wyoming.  My husband had died 4 months before.
It was the 4th of July, 1973.  The young boys wanted to sleep so I slept out with them on the front lawn of our country home.  We had fun looking at the stars and we were tired.  The boys fell asleep but I couldn’t, because I was thinking of their Dad and wishing he was here with us.  I did things like this with them hoping it would help them to not be so sad.
As I lay there I looked up and saw a large "fireball" floating over the trees and continued over the house, coming from south to north.  After it passed over another one came from the same direction but slightly off the same path but also going in the same direction.  And as soon as it passed was over my shoulder I saw a 3rd one came over.  
Their color was orangy-red and looked on fire and they were complete silent.  No noise at all..  It took about 10 seconds for each one of them to pass overhead until the next one came.  I was so shocked that I didn’t turn around to see how long it took them to go out of sight.
Also, I tried to compare their size with the moon.  Comparing the almost full moon in the sky to the fireballs they were three-fourths as big as the moon.  It’s really hard to tell how high or low they were.  I’d say they were as big as a saucer held at arm’s length.  This probably doesn’t make much sense but it’s the best I can do.
When I went to work the next day I told co-workers about it and they said it was being announced over the radio if anyone saw something strange in the sky last night to report it to the Sheriff’s office.  I did report it and sent the diagram I had made right after it had happened.
My only purpose in reporting this now is just to let someone, somewhere know that UFO’s are REAL because I saw it "with my own eyes."  
I’m a Christian woman and would not lie about what I’ve seen.  I’ve recorded it in my personal history of my life and I’ll never forget it.  
Thanks for giving me the opportunity to report this incredible sighting.