A total of 23 Red lights in night sky moving across the sky at a steady pace disappearing into the night over a period of 5 minutes

Monday, May 19, 2014.
Approximately 8:50 p.m., I spotted some red lights in the Northern sky moving South West across the sky.  They started appearing one at a time and took a kind of formation as they rose into the sky, first there were three in a triangle formation a space then four in a rectangle formation, they three more until twenty three appeared and moved gently across the sky and disappeared into the night sky.  They moved at the same rate of speed and in the same direction, while they disappeared at varying spots across the sky.  
During this time I noted we could see the stars clearly in the sky, an airplane traveling from the South East to North West through and passed the red lights.  The interesting part was the red lights never blinked like the lights on the airplane and we noted that while the airplane was moving away from us we could still see it in the distance while the red lights completely disappeared at various points of the sky.  I did try to take a picture of the lights – un! successfully – the lights did not show up on my I-phone and subsequently did not show up on the pictures I took.  I suspect the lights were too small and too far away.  I am not sure if this is an actual UFO siting but thought it to be rather interesting and unusual experience for me and my friend.  
There were two other people watching as the red lights cross the sky and multiple walkers in the park noticing the lights as we watched.  The total duration of the siting approximately 4 – 5 minutes.