A Star Trek fan, who loaned them to Paramount for the filming of this episode, had painstakingly built the precise replicas of the Con and Helm/Navigator consoles. They are the only "real" parts of the bridge. The rest of the bridge was recreated using footage from the Classic series episode "The Mark of Gideon." The planet Gideon, in fact, shows on the viewscreen during this scene. This was the only episode from the Classic series that had footage showing the empty bridge. This film only ran about 10-12 seconds, so they looped this footage, used blue screen effect, and incorporated Patrick Stewart and James Doohan.