3 large spheres large on top samller in middle smallest on bottom.

When I was a boy, I remember seeing three large spearical objects the largest on top, smaller in the middle and smallest on the bottom.  They were pale in color and looked like planets through a telescope but where much larger.  
My neighbor at the time said Government was probobly doing nuclear testing in the Atlantic to cause that effect.  
As I remember it it was in the south eastern sky. 
I was wondering if it had ever been reported. 
Thanks ((initials deleted))