Original: Roderick Thorp ( who wrote the novel Nothing Lasts Forever upon which the first Die Hard film was based ) receives credit for creating '' certain original characters '' although his name is misspelled onscreen as '' Roderick Thorpe . ''
Simplified: Just before McClane was forced out , he heard that the air traffic controllers wanted to head to the Annex Skywalk , a new branch of the airport , to restore their systems .