Steady stream of red, slow moving lights in the sky.

My husband and I were watching baseball and saw lights moving in the sky outside the window. They were slow-moving, red, fireball looking lights, traveling in pairs and moving slowly without sound.  More kept appearing.  
Our neighbor came outside and observed them as well.  
This continued for about 15 minutes.  I have never seen anything quite like this in the night sky before - larger than stars and noiseless.  Very strange.
Witness elects to remain totally anonymous; provides no contact information.  PD