They centralize all their news production in Maryland. The national news, sports, and the weather are all piped out of this central headquarters into the local affiliates. Yet, it's made to look like it's all local. The local affiliates have a bare-bones staff that goes out to get footage and interviews of local events - but most of the broadcast all come out of Maryland.
They also have a weekly spot called 'The Point' where Mark Hyman (Sinclair VP of corporate relations) gets on does a right-wing rant. He likes the phrase the 'loony left'... Once again this is beamed into all the local markets.
Here is this fuckface's picture. It's pretty easy to tell he's a phony, and a fascist to boot.
This is a picture of the head newscaster who is piped into all the local affiliates. He's creepy. He is the face of modern American corporate fascism.
For more information here's the newshour story.
http://www.pbs.org/newshour/bb/media/july-dec03/newscentral_12-11.html