On 11/5/12 seven lights were seen that appeared in a sequence, making a perfect line in the sky, and then disappeared.While driving down 17-A from summerville towards Moncks Corner, my wife and I observed three lights in the sky off to our right. These lights looked like an airplane making a turn in the sky. What caught our attention was the altitude of said lights. They were low for the planes we normally see flying over that area. The center light was almost a blue with the two other lights on either side of it being orange and equally distanced from the center one.Four more lights appeared to the left of the three already visible lights. The way they appeared was one right after the other, almost like the runway marker lights of an airport, one right after the other. As soon as the fourth new light, or seventh total light appeared, all seven went out simultaneously and were not seen again.The initial three lights were seen over trees, and guessing distance, I would have to guess they were between the area of Highway 176 and Cypress Gardens Rd. The other four lights that appeared were seen over 17-A.All seven lights were in a perfect line and spaced equally apart from each other. The furthest left light was at the highest altitude with the furthest right light being at the lowest altitude. The best description of the lights were almost flare like without the long falling, strobing, associated with flares. The lights appeared to never move direction. It was like a light switch, first they were flipped on in sequence, then they were shut off all at the same time.The background for this sighting was a clear dark night, with stars clearly visible in the sky.