Four glowing orbs present in the night sky, traveling not spontaneously, and making no noise.

We saw a red glowing orb that changed sometimes from yellowish orange to red.  It made a slow (slower than a plane) arc from right to left.  It then traveled toward us for a little bit, then directly away and the light dimmed out.  
A few seconds later, a second orb did the same thing, but traveling a little bit differently.  It's light dimmed out, and then we saw a third orb.  
A fourth orb going in an opposite direction (90 degrees from these three) came into view.  It was more obscured by trees.  The light glowed, and was not like an electric light.  It's movement  was not spontaneous.  
The first orb came toward us, changing from it's original direction, and then moved in the exact opposite way, sped up, and then dimmed out.  It made no noise.
Witness elects to remain totally anonymous; provides no contact information.  PD