A term which has entered common parlance to differentiate cable news from traditional news broadcasts is network news, in reference to the traditional television networks on which such broadcasts air. A classic example is the cable news channel MSNBC, which overlaps with (and, in the case of very significant breaking news events, pre-empts) its network counterpart NBC News; in some cases, viewers may have trouble differentiating between the cable channel and either a counterpart network news organization or a local news operation, such as is the case with Fox News Channel and the Fox network's owned-and-operated stations and affiliates (most of which use the "Fox (channel #) News" brand for their newscasts), due to the network's controversially perceived conservative-leaning political content that differs from the Fox broadcast stations' independent and generally nonpartisan reporting. Most U.S. cable news networks do not air news programming 24 hours a day, often filling late afternoon, primetime, and late night hours with news-based talk programs, documentaries, and other specialty programming.