These presenters were referred to as commentators. The last major figure to present commentary in a news broadcast format in the United States was Paul Harvey. With the development of the 24-hour news cycle and dedicated cable news channels, the role of the anchor evolved. Anchors would still present material prepared for a news program, but they also interviewed experts about various aspects of breaking news stories, and themselves provided improvised commentary, all under the supervision of the producer, who coordinated the broadcast by communicating with the anchor through an earphone .