Broadcasting Board of Governors CEO and Director Andrew Lack departing; Director-Global Operations André Mendes named interim CEO and director ... Communications Systems promotes interim CEO Roger Lacey to that job permanently, and he remains vice chairman ... 21st Century Fox moves Vice President Michael Petrie to that job for investor relations, succeeding Joe Dorrego, previously promoted to senior vice president-chief financial officer, Fox Television Stations ... Returning to KMGH-TV Denver is Brad Remington, ex-KTVK Phoenix, hired by E.W. Scripps as KMGH vice president and general manager ... Center for Democracy & Technology adds to board Andy Pincus, Mayer Brown, and Erika Rottenberg, ex-LinkedIn ... National Treasury Employees Union National President Colleen Kelley retiring following union’s national convention in August.