Started by the N.Y. MTA in 2002...and copyrighted...the Feds have to say “used with the permission of the NYMTA”. Ha!
https://youtu.be/7sxiateCgrI?si=gIDdLjdutauYe2AQ
https://www.nbcnewyork.com/news/local/new-see-something-say-something-ads-new-york-city-nyc/2045479/
https://nymag.com/news/intelligencer/mta-anti-terrorism-2012-10/
I heard it in civilian DoD back in 1989-90.