2012-07-13 - North Versailles, PA - Light

Several dozen orange lights in the sky over North Versailles Pa on July 13, 2012, around 21:15 hours

I was travelling eastbound on US Route 30 in North Versailles Pa. near the intersection with PA Route 48. Out of my driver-side window,I noticed in the sky above what first appeared to me as a flight of military helicopters with their search lights on and pointing forward. The light, however, was orange,like from a sodium vapor lamp, not white like a helicopter light, and the light appeared on top of the objects and not to their front, as a search light or a car headlight would be aimed. The objects that eminated this orange light appeared also to be flying in formation, possibly 1000 feet+ above the ground. They were travelling in a west-southwesterly direction and crossed over US Route 30 directly above me at a speed similar to a helicopter or small plane. There apeared to be several objects in a group, and several groups, one coming after another. These objects were flying in formation and their flight path was straight and unwavering. There had to be at ! least several dozen objects as described herein in this sighting. I turned off my car radio and wound down my window to hear the helicopter rotors but was very surprised to hear absolutely no noise at all. The objects were flying low enough to observe that they appeared to have an opaque base with a somewhat conical orange light located above the base. If not helicopters, I thought they could possibly be balloons, but I cannot figure out how they all would have been lighted in exactly the same manner and flying in formations.

I have never seen anything like this and am very confused about what these strange lights could have been.