Triangle shape, multiple points of light high rate of speed. Viewed twice, once north to south, then south to north

Myself and one other, watching the night sky, saw a triangle object with multiple points of illumination travel above the rim in a path parallel with the horizon at a high rate of speed silently. Although we had differing perceptions on distance between us and the object, I would have to guess it was within 3 miles, if not 1 mile from our location. Other party said it was closer. The rim view allowed judgement for distance traveled which I would guess to be about 3-5 miles. It covered this space in the span of about 4 seconds. After getting first sight on the object I was quickly shocked and surprised, stood up and pointed and followed with my finger tracing it along the horizon, saying holy @&$? Look at that. My knees buckled a bit and, partner said I see it I see it, and it was gone. The object seemed to travel in a way like it was tied to a string from the front and pulled along. Effortlessly and without resistance. Around second 4, the whole shape flickered dimly and was out of sight. We sat and talked about it discussing exactly what each of us saw and how it was nothing like we had seen in the night sky before. It made us both feel uneasy for some reason. We continued to look in the direction of the object as we sat and talked about it more, and about 5-10 minutes later it came back from the direction we saw it originally, this time about 1.5 speed. Lost sight of it when it passed behind a tree in the foreground. Did not see it come out the other side. Dogs started barking, car alarm in a parking lot between us and the object started chirping. At this point the one I was with wanted to go inside. I sat staring for a minute, listening, and I suppose thankfully, nothing more happened. Very unusual, very real.