100's of star like objects move in a synchronized way across a night sky and slowly disappear, Arizona.

A large fleet of star like objects, no flickering, were moving at the same speed (VERY SYNCHRONIZED-MOVING AS ONE MASS, this was what astonished me the most)  in a north east direction without formation, some were higher some were lower in the sky.  
As we watched it move across the sky they seemed to hit a wall or stop all at the same place in the sky (may have moved away from us) and slowly started to vanish.  
Looking through binoculars they seemed to disappear and then above the area where they stop about 10 of the star like objects were left, formed  line in an upward angle.  One of the objects in the middle of the line was brighter and then they slowly disappeared.