an important political figure. For example, one of the earliest such interruptions that modern viewers would recognize as "breaking news" coverage was for the assassination of U.S. President John F. Kennedy in 1963, (with CBS News anchorman Walter Cronkite's coverage being especially noted), and as such reflected the relatively crude technology and procedures of that era. Such breaks are now common at 24-hour news channels, which may have an anchor available for live interruption at any time. Some networks, such as Sky News, largely emphasize this, even advertising the station/network as being " first for breaking news". Another type of breaking news is that of severe weather events, which had such coverage evolve in a very similar manner. In North America until the 1990s, television and radio stations normally only provided long-form weather coverage during immediate, ongoing threats (such as a tornado that has been confirmed visually or by radar to be producing damage or a landfalling hurricane); cut-ins and, in the case of television stations, alert crawls during regular programming were used otherwise, even when higher-end alerts such as tornado warnings were issued. Advancements in newsgathering and weather technology (including the deployment of helicopters to provide aerial coverage and radar systems that can detect specific storm attributes), coupled with a few highly life-threatening events during the 1990s (such as Hurricane Andrew and the 1999 Oklahoma tornado outbreak) and the resulting heightened urgency to advise those in the storm's path to take safety precautions in advance made extended (or "wall-to-wall") weather coverage once a high-end alert is issued more common in storm-prone areas, with cut-ins only being used in weather events of lesser severity. In various countries and at various news outlets, terms such as "(late)breaking", "urgent", "flash", "bulletin", and "alert" may accompany breaking news reports. The term breaking news has come to replace the older use of news bulletin, with the latter term relegated to only the most extraordinary of events. There has been widespread use of breaking news at the local level, particularly when one station in a market wants to emphasize the exclusivity of coverage. Not all viewers agree that stories assigned as breaking news rise to the significance or level of interest that warrant such a designation. CNN chairman and CEO Chris Licht wrote upon assuming the position in 2022, "It has become such a fixture on every channel and network that its impact has become