Surveillance video shows Customs and Border Protection officers on the take—corrupted by drug cartels and human traffickers. The biggest fear? That terrorists could sneak into the U.S. and even smuggle in weapons of mass destruction. We’ll take you inside an F.B.I. border corruption task force as they track down agents on the take. That’s Sunday on Full Measure.

Preorder: “The Smear: How Shady Political Operative Control What You See, What You Think and How You Vote.”

Also, Scott Thuman takes us to London where the police force known as “bobbies” is undergoing a sea change. For years they’ve walked the beat primarily armed with only billy clubs or batons. But with the refugee crisis and new threats of terrorism, they’re rethinking things. More police are getting trained to use firearms.

Watch last week’s cover story: The Big Miss

We’ll also Follow the Money to Afghanistan where $85 million of your tax dollars was wasted on a five-star hotel and apartment building that were never built.