Driving at night and saw a green lit object drop down and zoom off

My husband and I were driving our family home from dinner at our parents. My husband exclaimed, “look at that!” I looked to where he was pointing and saw a red trail of light zoom off and disappear. It was a very clear night—you could see all the stars. It did not move like an airplane— it did a circular “swoop” before it disappeared. If it was a plane we would have seen it continue to travel off into the distance. My husband said when he initially saw it it was a green lit up object (half circle shape) that very quickly dropped straight down, and then jolted up (to make a “J” shape, before it zoomed off. When I saw it zoom off, it was red—-when he saw it, it was green. I have never seen anything like it. This was my husands second UFO sighting— he saw another years ago and it was similar.