I stepped outside of my home,I looked up and in the south eastern part of the sky I saw a long line of lights. I asked my wife to come out to see it. She too agreed it was an unusual line. 15-20 lights,following each other. It lasted about 30 seconds. I tried to capture a picture with my cell phone,but it didn't work. Although we live close to the airport,this was not an air craft. The line seemed to be moving in a north eastern direction. If you look at a map of Maine,it appeared the line was going from Bangor Maine towards Bar Harbor Maine. Best way I can describe it. The best thing I can compare the lights to are the flares that leave the back of a fighter jet trying to avoid a missle. This lasted for about 20-30 seconds and disappeared with no noise,no flash nothing at all