My wife and I were driving home from work on the afternoon shift. When I noticed some strange lights in the sky. Three flashing red lights one at the front and 2 in the middle. There was a row of blue lighs on the bottom. I put my window down to here what sounded like a jet engine. It was flying low to the ground, I guess about 1500 ft. and was moving at about 200 miles an hour. We watched it for about 6 minutes as we drove home. Then it went out of sight. I could not tell the shape as it was too dark to see.I am not sure about the date. It was about 3 months ago. Do you have any idea what we seen?