The bombings at the Boston Marathon serve as grim reminders that scary stuff can happen anywhere, anytime. And of course that means Chicago, and the Chicago Transit Authority.
So the old saying carries even greater weight these days: If you see something, say something.
In Boston, police are now more closely checking bags that riders carry on to trains. In Chicago on Monday afternoon, dozens of police officers swarmed Michigan Avenue as a show of force.
Also on Monday, there was some confusion about the CTA Green and Blue lines. False Twitter messages had gone out stating that the "CPD has shut down the Green and Blue lines to check for explosives." This was untrue.
Of course, it didn't help that shortly after the Boston bombing, a track fire on the Red Line forced northbound trains to detour to the elevated tracks around the Loop. But that fire was put out fairly quickly, and trains resumed their regular subway routing.
Bottom line on all this mayhem: Be on the lookout for suspicious activity and packages. That means we should all look up from our phones occasionally.