My wife, niece and I had just returned from an overnight stay in St. Louis. Once back in Columbia, we stopped at my mother's to pick up our dog that she was taking care of while we were gone. At approximately 7:15-7:20pm (CDT), we were standing outside chatting as we were leaving her house. I happened to look to the East because the moon was rising and was really large. I then noticed a very bright, white light moving across the sky in a straight line. My first thought was that it was the space station, as we had seen it before and it looked very similar. However, the object then turned almost immediately (90 degrees) to its left, then went backwards, angled to its lower-right, back up and continued to do so with no distinct pattern for what was probably 30-45 seconds. It appeared to be covering a lot of distance while performing these moves. I was just about to pull out my smart phone to record it when the light turned a greenish color, then disappeared. We all just kind of looked at each other, then about 2 seconds later just above the treeline, there were 3 very fast flashes of blue light that fell/moved toward the ground. There was no sound from the object that we could hear. We viewed this object in the East side of Columbia / Lake of the Woods area.