Thor Alex Kappfjell was a Norwegian offshore oil worker and BASE jumper. He is famous for parachuting from the observation deck of the World Trade Center's South tower in 1999. Previously, he had jumped from the 86th floor of the observation deck of the Empire State Building and the 61st floor of the Chrysler Building. Kappfjell claimed to have jumped more than 200 mountains and buildings in his daredevil career.