Defective parachutes! The elastic bands holding the parachutes to the rocket snapped, likely from old age. The rocket follows a perfect parabolic trajectory and slams hard into the ground. This video is long, because it takes us awhile to find the rocket and camera in the tall grass at Dart Airport.
Tried the launch at Dart Airport again, this time with the camera facing the nose cap (upward at launch). The intention was to capture cool footage on the descent, but it wasn't as stable as we had hoped.