Illegal traffic between the Rio Grande and the Falfurrias Checkpoint in South Texas.

Tactical cat-and-mouse games used in the war on drugs.

South Texas has become a hotspot for smuggling activities on the border.

Specially trained agents deal with problems specific to the border in South Texas.

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Agents in South Texas work to stop drug dealers, smugglers and undocumented immigrants from infiltrating residential neighborhoods and getting innocent bystanders involved.

The action never stops for Customs and Border Patrol (CBP) agents and local law enforcement who patrol the border 24 hours a day, seven days a week. As dawn breaks, agents track a group of suspected illegal immigrants from Mexico.

For those rare occasions when human skills are insufficient, Customs and Border Protection (CBP) agents and local law enforcement officers turn to their friends in the animal world for some on-the-job help. In Rio Grande City, Archie, a CBP K-9, helps agents track a group of illegal immigrants spotted passing through.

Drugs, humans, weapons and money can be hidden anywhere by anyone at any time, and nobody knows that better than the law enforcement officers who work on or near the border. Laredo narcotics officers raid a residence in a school zone after a confidential informant buys crack cocaine direct from a drug dealer's house.

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