June 22, 2018 6:17 pm CTU President Karen Lewis Preparing to Retire CTU President Karen Lewis is retiring, saying it’s time to focus on her health. NBC 5’s Mary Ann Ahern has the latest from a conversation she had with the retiring teacher today. Local 1:49 Suspect in murder of fallen CPD officer Luis Huesca taken into custody 0:51 4 Chicago restaurants named among best brunch spots in the US by OpenTable 2:07 A look at top small businesses in Chicago for Small Business Month 2:16 Chicago Sky star Angel Reese speaks on preseason, confidence with NBC Chicago's Mike Berman 2:16 Chicago City Council weighing a change to speed limits on city streets