I don't think it's due to being highly processed. It was just footage from their chopper.
You can see something similar in these images, and these were some of the earliest reports that the explosion had happened: https://www.facebook.com/ChrisDavisReports/posts/just-horrific-images-coming-out-of-the-mcewenbucksnort-tennessee-area-where-accu/1192854099330048/
