Possible UFO Sighting

Possible UFO Sighting
Time: 9:35pm 
Location: South Carolina

I wanted to post this here as I didn’t really know where else to put it. But this was a few nights ago that my parents and I were sitting out on our back porch when we noticed two balls of light traveling very fast across the sky. They didn’t have any blinking lights like all planes do and they were moving incredibly fast. You can see in the video that there was a plane next to one of the lights and you can see it blinking but the ball of light doesn’t. I was wondering what you guys think about it?