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
CNN Well Expert), and Elizabeth Cohen (Senior Medical Correspondent). On March 7, 2017, CNN announced the official launch of its virtual reality unit named CNNVR. It will produce 360 videos to its Android and iOS apps within CNN Digital. It is planning to cover major news events with the online, and digital news team in New York City, Atlanta, London, Hong Kong, San Francisco, Dubai, Johannesburg, Tokyo, and Beijing. CNN also maintains a wire service known as CNN Wire. CNN Newsource is a subscription-based affiliation video service that provides CNN content to television station affiliates with CNN, including terrestrial stations and