Embedded crews follow elite law enforcement units as they take down smugglers.

Embedded crews follow elite law enforcement units as they take down smugglers.

Showing how the police in Arizona deal with the illegal activity happening on the US-Mexico border.

This is the fourth episode of Border Invasion, where embedded crews follow elite law enforcement units as they take down smugglers on the US-Mexico border.

Following the controversial Sheriff Joe Arpaio's Maricopa County Police Department as it deals with drug smugglers, human smugglers and kidnapping syndicates.