Wireless Infrastructure Association names Karmen Rajamani, ex-Crown Castle, vice president-government affairs, to be effective Tuesday … ACA promotes, effective Friday, Stacey Leech to vice president-member services; Tomeika Slappy to manager-member services in addition to her present duties as executive assistant to the CEO; and Nathan Penrod to director-digital and social media … The Battle Group names principal Torben Voetmann president … Warner Bros. Discovery taps Mark Thompson, former New York Times Co. president-CEO and ex-BBC director-general, as CNN Worldwide chairman-CEO, effective Oct. 9 ... CNN names Mark Thompson, former New York Times Co. president-CEO, CNN Worldwide chairman-CEO … Fleet Space names Isa Notermans, ex-Airtasker, as chief people officer … Emmis President-Programming Rick Cummings announces his retirement, effective Friday; he will remain a consultant.