This spring, Nexstar Media Group went all-in on NewsNation, its national newscast first launched in September 2020, through a rebranding of cable network WGN America and retooling of its schedule.In this week's Broadcast Exchange, we speak with Blake Russell, Executive Vice President, Station Operations and Content Development, at Nexstar about the network, its broadcast technology stack and the metrics he's watching for success. We dive into building a newsroom and Nexstar's custom content s...