Chicago Fire actress DuShon Monique Brown, who played a secretary in the NBC show “Chicago Fire,” has died at the age of 49. The Cook County medical examiner’s office confirmed Brown’s Friday death at Franciscan St. James Health Olympia Fields, however the cause was not disclosed. Brown was a veteran of Chicago theater. She worked as a crisis counselor at a Chicago high school and led its drama program before winning the role of Connie on “Chicago Fire”. Brown also had a recurring role as nurse Kattie Welch in “Prison Break” and one-time guest spots on “Empire” and “Shameless.” “Chicago Fire” executive producer Dick Wolf said the show’s family is “devastated to lose one of its own.”