USA NETWORK ANNOUNCES SEASON 6 PICKUP OF ‘CHRISLEY KNOWS BEST’ AND EXTENDS SEASON 5 BY 18 ADDITIONAL EPISODES SEASON 5 TO CONTINUE SEPTEMBER 12, FOLLOWED BY NEW AFTER SHOW ‘ACCORDING TO CHRISLEY’ CHRISLEY KNOWS BEST Season 5 Delivering Best Season Yet, Averaging 3.2 Million Total Viewers Each Week NEW YORK, NY– August 11, 2017 – Ahead of its …