April 9, 2016 7:05 am Weekend Web: The Improved NBC Chicago App NBC 5’s Art Norman introduces us to the new NBC Chicago app, including new and impressive weather and traffic features. Local 1:42 Warrant issued for suspect in murder of Chicago police officer 2:15 Politicians, season ticketholders skeptical on Bears' plans for new stadium 2:09 Former Foxtrot, Dom's employees protest after abrupt closures 3:26 Friday morning weather 0:32 Man shot and killed in ‘exchange of gunfire' with police in Valparaiso identified