Keeping the B-17 theme going... The Commemorative Air Force also keeps one flying - among many others. It is a blessing these organizations are around so that we can all experience history. If you are in the DFW area one of the best (IMO) free air shows that they participate in happens in Addison, Texas. Every year on July 3rd they have a free airshow and fireworks! Usually going on at the same time are also concerts and food events.