ShopTalk Nexstar Taps Mike Vaughn to Lead KARK-KARZ By Andrew Gauthier on Jun. 20, 2011 - 5:21 PM Nexstar has promoted Mike Vaughn, the vice president and general manager of KNWA-KFTA in Fayetteville-Ft. Smith, to VP-GM of KARK-KARZ, the company’s Little Rock duopoly. Before being named VP-GM in Fayetteville, Vaughn was ...