Martin Air Craft: iHeartMedia/Norfolk Market President Derrick Martin has been named President of the company's St. Louis region, which also encompasses Springfield, MO and Des Moines, Cedar Rapids and Davenport, IA. He succeeds Beth Davis, who is no longer with the company. The move marks a return of sorts as Martin served as GSM for iHeartMedia/St. Louis earlier in his career. Other stops include Memphis, Chicago and Detroit. Reach him here.