low flying red-orange lightsThe night was crystal clear with not a cloud in the sky. It was the night before a full moon, so the reflected light off the moon illuminated the yard, etc., giving it a twilight feel. At approximately 9:15 PM, I observed two large, red-orange sparkling lights, very slowly approaching our home from above the tree line. (We have woods behind our home, but without the leaves on them it is possible to see for quite a distance into them.) My husband and I immediately went outside into our backyard. We observed a third red-orange light approaching behind the first two. They were large, completely silent, and moving very slowly. No visible structures were visible, just light. Within a few minutes, a fourth red-orange light approached following in the same path as the first three. They continued to very slowly progress over the tree line and off into the distance. Also, our dog, still inside, barked relentlessly at the lights.