 Although MeTV prefers that its local affiliates carry the entire schedule, some affiliates regularly pre-empt certain network programs in order to air morning and/or prime time newscasts produced by the station specifically for the subchannel or public affairs programs (such as with WLKY-TV in Louisville and WBAL-TV in Baltimore); this has become particularly more common since September 2015, when other Hearst Television-owned stations in markets where the group does not maintain a duopoly (as is the case with WBAL and WLKY, which debuted theirs earlier) gradually began launching prime time newscasts on their MeTV-affiliated subchannels.Some of the major network affiliates that carry MeTV full-time (such as WBAL, WLKY and WCVB-TV in Boston) use the affiliated subchannel as a buffer during network sports coverage, breaking news or severe weather coverage situations to carry regularly scheduled network and/or syndicated programming seen on its main channel.Some affiliates may also preempt select MeTV programs to air infomercials (such as with WZME in Bridgeport, Connecticut, which pre-empted much of the network's morning and late night schedule with paid programming), locally acquired syndicated programming (such as with WJLA-TV in Washington, D.C., which aired events from the American Sports Network, a syndicated college sports distributor owned by WJLA parent Sinclair Broadcast Group, over its former MeTV subchannel on some weekends), or in some cases, because the local syndication rights to a particular program are held by a station other than the MeTV affiliate (such as with "The Andy Griffith Show", which since the network began airing the program in September 2014, is substituted in many markets with an alternate feed of its spin-off "Mayberry R.F.D.