 In the United States, the major broadcast television networks utilize a model wherein individual stations within a media market are affiliated with a specific network, in an agreement similar to a franchise.An affiliation gives the station the privilege to broadcast the network's national programming (which typically covers primetime programming, and in some cases may also include news programming, programs in other dayparts such as daytime and late-night, as well as national sports broadcasts), incorporate the network's name and logo into their on-air brand (more often than not, affiliates are required to incorporate the network brand into their branding in some form), and sell blocks of local advertising time during network programs.Each network has a group of stations that are owned and operated (O&O) by their respective parent company; they are more common in larger, major metropolitan markets such as Los Angeles and New York City, whose stations are traditionally considered the flagship stations of their respective network.