Almost five decades into his celebrated, Texas Radio Hall of Fame career, legendary Dallas sports radio host Norm Hitzges is hanging up his microphone. He made the announcement shortly after 10:35 a.m. on Thursday during his "Norm & D Invasion" show that he co-hosts with Donovan Lewis on Sportsradio 1310-AM/97.6-FM The Ticket each weekday from 10 a.m. to noon. His last day on the air will be Friday, June 23. When he turns off his mic that day, it will mark the end of a remarkably storied career. Hitzges has worked 48 years as a sports commentator in North Texas....