Large Triangle of lights in the sky making a weird sound.My father was driving me to Elizabeth City, NC from Greenville, NC to visit my sister. We made a stop in Hertford, NC and visited my grandmother for about an hour or so. This day was very bizarre when it comes to UFOs.. Earlier, my sister was watching a UFO documentary. When we arrived in Hertford, NC, and my uncle was watching a UFO documentary.Anyway, We finally left around Midnight. As we were about to make a left turn to head to Elizabeth City, NC, I noticed 3 lights hovering in the sky out in the field. I demanded my father to pull over so we could get out and take a closer look. I told him "Dude! There is a UFO over there! I swear.. Please trust me just pull over. That thing is huge!" I was very shocked to see it.So me and my father got out of the car and walked about 10 or 15 feet behind the car so we could see the object behind the trees. I thought I was going to have a heart attack I was so worked up. My blood pressure was sky high..At this point it was quite low and not moving at all. One of the three lights kept going dim. The object was making a loud swooshing/wah wah sound. Unlike any sound I have ever heard.. I asked my dad, "Do you hear that?! That's the UFO making that noise! That must be the engine or something" We were very shocked. He said he's never seen anything in the sky like that before. They definitely were not stars. After staring at the object for a few minutes, we resumed driving to Elizabeth City, NC. The object was still in the sky. Very large, I'd say the size of a football field if not bigger. I said "This must be a Mothership." So, as we arrive at my sister's house in Elizabeth City, I ran inside to get my cousin. Because me and him experienced a UFO sighting about 10 years ago in the daylight. But that's another story..He came outside with us to view the object. He said "Wow seriously? I was just inside watching a documentary on UFO's!" I found that very bizarre, as my sister and uncle were also watching documentaries earlier.At this point, it was higher in the sky and 2 of the lights were very dim. Also, you didn't hear the noise it was making in Hertford.He said, "That's the mothership! They were just talking about this on TV!" I was amazed he said that, because I had just said that about 30 minutes ago, when we first saw it in Hertford.I went back outside at 3AM and the object wasn't there. It was very cloudy at this point. This was a very cool experience and I was very happy to experience with a few family members. You had to have been there to really understand this sighting. What a crazy night.I was able to capture a few photographs of the object, but they didn't turn out very well. I will try and add them to this post.Thank you very hearing my story! - ((name deleted))