Border Wars

Agents respond to a shoot-out on the Rio Grande; a stash of cocaine hidden in a car floor.

The agents enlist the help of the A-Star surveillance helicopter to track a suspected smuggling ring.

A large stash of cocaine is discovered in a unique hiding place; millions of dollars of heroin is seized at port.

Human smugglers and the drug cartels use the Rio Grande River as a route to cross the border with their contraband.

The flow of illegal immigrants and drugs; Border Patrol's campaign for new methods to avoid detection.

Cartels with nearly $1 million in cash and drugs; crystal meth in a war veteran's SUV; decoy bundles.

An illegal immigrant chase; new crossing and concealment strategies.

A getaway car smuggling drugs; illegal immigrants led by a human smuggler; a hidden tunnel in a house.

Agents set up a trap in an area of the Arizona desert known as "The Jungle"; agents discover a major drug-running tunnel.

In Puerto Rico, agents try to keep a drug seizure for transport to San Juan; a suspected drug smuggler enters Puerto Rico from the Dominican Republic.

An undercover "buy and bust" operation in Puerto Rico; agents race to find illegal immigrants who have landed on a secluded beach.

The open coastline of Puerto Rico is used as a springboard into the U.S. by drug traffickers and contraband dealers