CBS Corporation is a mass media company. The Company operates through segments, including Entertainment, Cable Networks, Publishing and Local Broadcasting. The Entertainment segment is composed of the CBS Television Network, CBS Television Studios, CBS Global Distribution Group, CBS Interactive and CBS Films. The Cable Networks segment is composed of Showtime Networks, which operates program services, such as Showtime, The Movie Channel, and Flix; CBS Sports Network, and Smithsonian Networks, which operates a program service, Smithsonian Channel. The Publishing segment is composed of Simon & Schuster, which publishes and distributes consumer books under imprints such as Simon & Schuster, Pocket Books, Scribner and Atria Books. The Local Broadcasting segment is composed of CBS Television Stations, the Company's 30 owned broadcast television stations, and CBS Radio, through which the Company owns and operates 117 radio stations in 26 United States markets.