Inside the DEA

With unprecedented access to undercover footage, Explorer reveals the inner workings of a sting operation designed to bring down one of the world's most prolific and untouchable criminals, international arms dealer Monzer al-Kassar. Through the eyes of Drug Enforcement Administration (DEA) agents and their undercover informants, we'll see how an elite team risked their lives to catch Kassar in the act of selling deadly weapons illegally.