I walked outside with the dogs before bedtime. I glanced up and saw six or seven bright blue-white lights in formation moving smoothly and silently across the sky. They were 'flying-wing' shaped without any aircraft type lights. The entire surface of each object was glowing. I thought they were possibly illuminated birds at first, but they were moving too quickly. They accelerated rapidly beyond my line of site due to tall trees in the near ground. I was in disbelief and feel a bit shaken. I have never researched or reported a UFO sighting. Any other "UFO" I have previously witnessed was unremarkable compared to this.