EE WAS TRYING TO UNHOOK A CABLE TRAILER FROM HIS PICKUP. HE WAS JUMPING UP AND DOWN ON THE BUMPER OF HIS TRUCK WHEN IT CAME UNDONE FROM THE PICKUP, STRIKING HIM AND TOSSING HIM INTO THE AIR (APPROX 4 FT) AND OVER THE TRAILER. HE LANDED ON HIS BACK AND SHOULDER ON THE GROUND.