The film was the last one of special effects supervisor Derek Meddings, to whom it was dedicated. Meddings' major contribution was miniatures. It was also the first Bond film to use computer-generated imagery. Among the model effects are most external shots of Severnaya, the scene where Janus' train crashes into the tank, and the lake which hides the satellite dish, since the producers could not find a round lake in Puerto Rico. The climax in the satellite dish used scenes in Arecibo, a model built by Meddings' team and scenes shot with stuntmen in Britain.