National Geographic documentary 'The Flagmakers' showcases the employees of Eder Flag located in Oak Creek, Wisc., and the millions of flags they produce every year. Executive produced by NBA superstar Giannis Antetokounmpo, the film was directed by Sharon Liese and Cynthia Wade, who we talk to on this episode, along with Milwaukee residents who share their own reasons for the flags they fly from their front doors.