It was 9 to 12 Orange Balls moving southwest

I’m a cross country truck driver these balls where moving slowly Southwest, I was driving a hazmat tanker so I couldn’t stop to photograph. They were in several groups the first was in a classic V formation the other were in groups of 3. They were flying under the cloud cover there were thunderstorms in the area that night. I drove underneath them and could see them behind me in my rear view also.