Cause of crash has still not been determined. Possibility of brake failure. The pilot was not hot dogging as has been reported in the press. He made a couple of conservative passes prior to landing.
The USAF released the accident report stating, "the aircraft's environmental control system caused extreme fogging that completely obscured the pilot's visual cues and severely affected correct execution of normal landing procedures. The pilot applied the defog procedure without success. Without the necessary visual clues, the pilot did not apply adequate aerobraking which increased his landing distance." 5.4 million in damage to the aircraft.