String of lights over Raleigh near falls lake

Near Falls Lake walked out of the house. Wife looked up and said "what's that". I said probably birds. She then said "birds that have lights?" Conditions sparse clouds, dark. Second look I could see a string of lights heading west to east in an subtle arc. Moving at a pace probably double to triple a commercial airliner. Evenly spaced if I held a ruler to the sky I would say 1/2 inch apart from my vantage point. Some were a little higher than others all moving steady in the same direction. When they hit a certain spot in the sky they disappeared one by one as if going behind a curtain. They came into view in the west about 25% (1/4 distance from horizon) across the night sky disappearing at about the same point in the east. My 18 year old son also saw this. We tried to film it but it came out too dark to see. The lights were very very high in the sky