My wife and I were heading home from dinner on St. Rt. 30, heading east from Mansfield. We had just passed the I-71 interchange and I looked up in front of us out of the windshield just as my wife said " Do you see this?!" There were a series of 4 lights (may have been more) in a line. It reminded me of a leading edge of a stealth bomber, that boomerang shape. But much much bigger. If you could see the object, it would stretch across a good part of the sky. They were heading east/north east as well. They were present for about 5-10 seconds and then just vanished. The trajectory they were travelling showed no evidence of them being re-lit or turning back on. They did not appear to fall down. They just vanished. My wife asked me "Ok. So what was that?" We discussed the details and agreed we saw the same thing. And that we did not know what it could be, but it did not fit what we would expect in shape or behavior from conventional air craft.