Or for those that frequent the Lake Front, start asking around? Don't be afraid to start a conversation if your at Navy Pier ? or ?.
One never knows you may bump into someone that says " oh yea I saw all of that as I left"--- Gee I did'nt know, "Yep I think seen them before, oh I saw them an hour ago?
ONE NEVER KNOWS?
An innocent conversation can lead to an eyewitness & that person may NOT KNOW THE OUTCOME! Or that the P.D. is looking for them.
"Political Correctness is a doctrine, fostered by a delusional, illogical minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end."