Starting Nov. 3, officers will select passengers at random at Chicago Transit Authority stations. Bags will be swabbed for explosives residue but will not be opened. The process takes about 30 seconds.Also be advised:
[Cmdr. Nancy Lipman of CPD's public transit unit] says anyone refusing to have their bag checked will be denied entry.Also it was noted in the AP report that there are no specific threats but are to guard against potential terrorist attacks. Such measures have been performed in both in NYC and LA.