"This afternoon, two aircraft were involved in a mid-air collision at Dallas Executive Airport. The aircraft were a B-17 Flying Fortress and P-63 Kingcobra, both out of Houston. Currently we do not have information on the status of the flight crews as emergency responders are working the accident. The Commemorative Air Force is working with local authorities, the FAA, and the NTSB will conduct a thorough investigation into the cause of the accident."
Source: The sad CAF statement that confirmed the tragic accident that befell two CAF aircraft at the Wings Over Dallas Airshow.