see something, say something
https://www.foxnews.com/us/new-jersey-sparks-terror-fears-see-something-say-something-roadway-campaign
rivers in New Jersey have been greeted with roadway signs that read, "Suspect Terrorism? See Something, Say Something," with a tip line number to report threats.
These signs are part of a public safety campaign launched last month by the New Jersey Office of Homeland Security and Preparedness (NJOHSP) in partnership with the state Department of Transportation and New Jersey Turnpike Authority. But their sudden appearance on major highways, with little notice or fanfare, has alarmed state residents.