I was driving South on Murfreesboro Rd and I went under the runway bridge by the airport. As I was coming out of the bridge I seen 2 bright lights in the sky. It was 8:00 at night and it was too small to be the moon and it was 2 of them. They were very low in the sky. I remember a plane had just taken off and I was wondering why those objects were so close to where the planes take off. The objects had a bigger bright light at the bottom and dimmer lights at the top. The way they moved it looked like parachutes but it was dark so I couldn't see the shape. I watched them and one bright light went dim. They hovered in the sky and kind of moved around spacing further apart then coming back in closer. I took a back road and lost them but when I turned left on Smith Springs Rd, I seen them again. They were higher in the sky and I noticed one of them (could have been both) moving extremely fast in the sky. I see airplanes all night because of where I live and these objects were moving faster than a jet. They headed east and that's when I lost them.