News ticker a map of an entire state or the station's viewing area (through a system known as First Warning). In both cases, the start of the ticker's cycle was often accompanied by an attention signal, such as warning tones, an abbreviated cut from the station's news theme or a jingle used by their affiliated network (such as the NBC Chimes). The first network to utilize a continuous ticker was CNN Headline News. In 1989, the cable network introduced a ticker that initially featured stock market data with indexes of the major stock exchanges (including the Dow Jones Industrial Average, NASDAQ and
William Headline Navy prior to his career in journalism. He worked for Louis Harris and Associates in New York gathering polling information. CBS News in New York hired him to work on coverage of the 1964 presidential election. Headline was promoted to senior vice president and later moved to Washington in 1974 as the network's assistant bureau chief. In his years at CBS News, Headline supervised the network's coverage of political conventions, overseas presidential trips and papal visits, and was the network pool producer during President Richard Nixon's resignation. Headline was hired by CNN in 1983, and was appointed as the network's