December 15, 2021 7:15 pm Nightly Update: Vaccine Milestone, Omicron Threat, Stevenson Foot Chase The top Chicago-area headlines you need to know from Dec. 15, 2021. Local 1:19 Alerts issued as millions of birds expected to cross Illinois overnight 1:54 An Archaeopteryx, the ‘world's most important fossil' unveiled at Chicago's Field Museum 0:45 McDonald's teases plans for a big burger launch 0:19 Person dies after falling from stands at Ohio State University graduation 8:50 Dolton mayor's former assistant releases video message regarding alleged sexual assault in Las Vegas