severity of the event, and often the network may just pass down the coverage by their local affiliate with spare commentary by the network's anchors. In the United Kingdom, Independent Radio News provides special alarm systems specifically to notify its affiliates of deaths in the British royal family, mandating their participation in heavily-coordinated mourning protocols that are practiced by the government and broadcasters. Other considerations are made; FM music stations rarely relay breaking news unless it is an event of grave national concern, though local weather warnings are relayed when in effect (either in the form of updates provided by an on-staff anchor, a disc jockey, or the on-air staffer handing all station operations in an overnight period, an emergency alert system or through an audio simulcast of a television station which maintains a contractual partnership with a radio outlet). Less urgent events allow a network to feed updates to stations at :20, :30 and :50 minutes after the hour to give a summary of events. Stations are also careful about what stories are relayed during play-by-play broadcasts of professional and college sports, as those are the programs most listened to on the radio, so there, breaking news coverage is often limited to only commercial breaks or a promise of 'details later' after the event, within a station identification. Usage Instant news became possible with the invention of the telegraph in the 1840s. The completion of the Transcontinental Railroad in 1869 is an example of this. News bulletins have been a fixture of radio broadcasting since at least the 1920s. Examples of early news bulletins in the Golden Age of Radio include fictionalized versions in the 1938 radio drama The War of the Worlds and coverage of the attack on Pearl Harbor, which was also the first television news bulletin, reported on stations in New York and Pennsylvania. KTLA in Los Angeles is credited with being the first television station to provide extended coverage of a breaking news event: for 27½ hours from April 8 to 9, 1949, the station carried live coverage of an attempt to rescue three-year-old Kathy Fiscus, who had fallen down an abandoned well in San Marino, California, where she ultimately perished due to asphyxia from a lack of oxygen. In the decades before 24-hour news networks such as CNN began to exist, programming interruptions were restricted to extremely urgent news, such as the death of