A video shared with the Associated Press overnight on Wednesday shows Florida workers installing a new sign labeled "Alligator Alcatraz" along the only highway leading to the new immigrant detention center in the Everglades.

Founded in the 1960s, the Everglades Jetport was slated to be the largest airport in the world and a hub for supersonic travel. Environmental concerns and the decline of the supersonic jet industry killed the jetport project;