This two-part episode takes viewers inside an investigation by the Pittsburgh Tribune-Review 's Carl Prine, who reveals shockingly lax security around 48 chemical sites in major American cities and the railways that serve them.

This two-part episode takes viewers inside an investigation by the Pittsburgh Tribune-Review's Carl Prine, who reveals shockingly lax security around 48 chemical sites in major American cities and the railways that serve them, planting his business card in vulnerable places where, as he reported, America's enemies might just as easily plant a bomb. Prine has been covering this story on and off since the attacks of September 11, 2001, and has proven that in many cases, known lax security has gone uncorrected for years. For that, he has been hailed as truth-teller by some and attacked as an abettor of terrorists by others. EXPOSéshows there's more to Carl Prine than ever makes it into his newspaper stories - and it just might turn some people's ideas about him upside down.