Orange lights orbiting above Fairbanks/North Pole AlaskaAt approx 2110h on 9/28/2013, I saw an orange light above the tree line to the North. I was inside and initially observed light through the open blinds. On going outside, I could clearly see that the orange light was travelling in a counterclockwise orbit. The light was travelling slowly, roughly speed of what you expect of a slow flying single seat aircraft. As the initial orange light continued its orbit towards the East, I then saw a second orange light again coming from the North. It appeared they were 180 degrees off from each other, making the same CCW orbit. As they would disappear towards the East the orange glow would dim to a faint blue, until being obscured by trees to the East. The objects made no sound. There are a number of small airstrips nearby. Regularly have small aircraft and military helicopters fly in nearly same area. However, airstrips are daylight use only and always hear the aircraft. From my position, the lights would appear at approx a 40deg NE and elevation angle approx 16 degrees. They would disappear from sight at approx 125deg SE, elevation angle approx 16 degrees. This orbital pattern continued for at least 15 minutes. I attempted to take pictures. Camera would not focus clearly on orange light, with no other objects for it to focus on. Using a tripod and 3 second exposure, captured picture showing trail of orange light.