CBP finds drugs concealed in clever ways; HSI pursues traffickers in a daring sting.

HSI conducts a controlled delivery of MDMA; CBP questions a possible drug smuggler.

The officers discover cocaine in the lining of bags full of leather jackets.

CBP searches a suspicious suitcase; HSI intercepts drug-filled pistons.

U.S. Customs and Border Protection agents suspect a man of smuggling internally; HSI delivers ecstasy in hopes of an arrest.

Homeland Security Officers interrogate a passenger found with cocaine in his luggage.

Special agents contend with smugglers attempting to bring cocaine into the country.

Officers use strategy to determine who may be transporting illegal drugs.

As night falls on John F. Kennedy International Airport, special agents continue to crack down on smugglers attempting to bring illegal goods into the United States.

Homeland Security at JFK International Airport deals with daily issues ranging from fraudulent visas to human trafficking.

Homeland Security at JFK International Airport deals with daily issues ranging from fraudulent visas to human trafficking.

Homeland Security at JFK International Airport deals with daily issues ranging from fraudulent visas to human trafficking.

Homeland Security at JFK International Airport deals with daily issues ranging from fraudulent visas to human trafficking.

Homeland Security at JFK International Airport deals with daily issues ranging from fraudulent visas to human trafficking.

Homeland Security at JFK International Airport deals with daily issues ranging from fraudulent visas to human trafficking.

Homeland Security at JFK International Airport deals with daily issues ranging from fraudulent visas to human trafficking.

Homeland Security at JFK International Airport deals with daily issues ranging from fraudulent visas to human trafficking.

Homeland Security at JFK International Airport deals with daily issues ranging from fraudulent visas to human trafficking.

Homeland Security at JFK International Airport deals with daily issues ranging from fraudulent visas to human trafficking.

Homeland Security at JFK International Airport deals with daily issues ranging from fraudulent visas to human trafficking.

Homeland Security at JFK International Airport deals with daily issues ranging from fraudulent visas to human trafficking.

Cameras follow the action along Arizona's Sonoran Desert, one of the busiest border crossings in the country, as officers and agents of U.S. Customs and Border Protection fight terrorism, apprehend drug smugglers and intercept people entering the United States illegally. The series also embeds with Customs and Border Protection, and with local law enforcement, as units patrol near and on the border in South Texas.

How does the drug trade work? Can it be stopped or should it be regulated? And what are the personal costs? Those are just some of the questions asked in this series, a comprehensive look at society's most abused drugs: cocaine, methamphetamine, heroin and marijuana. First-person perspectives from traffickers, dealers, users, law enforcement and medical professionals detail how the drugs are processed and moved onto the streets, and the effects they have on the human body. It's a raw, eye-opening documentary about a billion-dollar industry.

Taking a look at cocaine smugglers and what is done to stop them.

Fishing for bluefin tuna is a way of life for many residents of Gloucester, Mass. "Wicked Tuna" takes viewers into the unrelenting North Atlantic waters infamously spotlighted by the novel-turned-feature film "The Perfect Storm," to follow captains who are relied upon by their families, their shipmates, and by Gloucester itself, to haul in boatloads of the large but elusive bluefin. The pressure to deliver is unforgiving -- the fishing season is short and tuna populations are dwindling -- but one "monstah" catch can reel in just as large of a payday.

Dream adventures turn into hellish nightmares for the travelers featured in this series, which recounts through first-hand interviews and re-enactments their experiences of being arrested in a foreign country for drug smuggling, and how they coped with the resulting lengthy prison terms.

Dream adventures turn into hellish nightmares for the travelers featured in this series, which recounts through firsthand interviews and re-enactments terror-filled experiences of being arrested in a foreign country, usually for drug smuggling, and how they coped with the resulting lengthy prison terms. Viewers also hear from people directly involved with the arrests, whether it's the undercover agents gathering the evidence against the suspects, or the people making the drug dealing offers.