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"National Geographic goes inside the US-Mexico border with unprecedented access to the growing arsenal of high tech cameras, ground radar, and skilled trackers who are faced with the challenge of controlling the desert every day."

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"National Geographic goes inside the US-Mexico border with unprecedented access to the growing arsenal of high tech cameras, ground radar, and skilled trackers who are faced with the challenge of controlling the desert every day."

"Aviation Enforcement Pilot John Manheimer and his Black Hawk team struggle to track down and stop suspected illegal border crossers and drug smugglers in the rugged mountain terrain of the Sonoran Desert."

"Border Patrol Agents William Ortiz and Eduardo Berlanga intercept a pickup truck packed with people who have illegally crossed the border. The situation heats up when they find two young twin girls and a distrustful father."

"Officer Hector Navarro stops a silver pickup truck at the Nogales port of entry. When suspicion prompts a canine sniff for narcotics a cleverly hidden trove of heroin is uncovered - ..."

"An officer responsible for intercepting drug money being smuggled into Mexico detains a suspect and uncovers a stash of suspected contraband profits. CBP seeks out corruption within its own..."

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"Officers and agents of U.S. Customs and Border Protection work 24\/7 to patrol the border between San Diego, California and the Mexican city of Tijuana."

"On the U.S.-Mexico border, officers and agents work to fight the threat of terrorism while remaining vigilant against illegal immigration and contraband smuggling."

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"Downtown, Border Patrol and ICE agents discover a major drug-running tunnel and suspected smugglers may still be inside."

"Witness one of the Caribbean's largest drug busts of the year when more than 1.5 tons of cocaine are found aboard a Panamanian fishing boat heading to the U.S."

"National Geographic's ripped-from-the-headlines Border Wars special explores Mexico's drug war."

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"Agents beef up security in Miami in preparation for Super Bowl XLIV, while also patrolling the rest of the city for drug trafficking and illegal immigration."

"Drugs, guns, cars and money are just some of the items confiscated on a typical day by Customs and Border Protection (CBP). But what happens to this contraband after it is seized?"

"Along the El Paso-Juarez border, agents and officers of the Department of Homeland Security investigate a young couple who are suspected human smugglers, uncover a floor of marijuana in an SUV, and target a high-level supplier in a drug sting."

"CBP agents dismantle an observation point used by smugglers to monitor agents' movements in the remote desert, and seize a vehicle attempting to carry weapons and nearly $800,000 back to the Mexican cartels."

"In this episode of Border Wars, agents and officers struggle to stop cartels and illegal immigrants whove found weak spots in spite of increased fortification along the U.S.-Mexico Border. Four feet beneath Nogales, agents crawl through a claustrophobic drug smuggling tunnel, knowing they could come face to face with armed criminals. Near the Port of Entry, Nogales Rail Inspection Team is on high alert as a freight train full of new automobiles rumbles toward them. Trains, with infinite hiding places, are becoming a favorite place for cartels to stash drugs: If the officers arent careful, they could easily miss a load. In the desert, Border Patrols only dirt bike unit races after a group of illegal immigrants. But in this sprawling Indian Reservation, the agents will need skill - and luck - to catch them."

"With the help of a Blackhawk helicopter, agents arrest a suspected smuggler who is backpacking drugs into the U.S."

"Customs and Border Protection patrol the crucial boundary between El Paso, one of the safest cities in the U.S. and Cuidad Juarez, considered one of the most dangerous cities in the world."

"Border agents in Arizona defend a national park overrun by smugglers."

"Border agents in El Paso, Texas battle to secure the city from human trafficking and drug smuggling."

"Agents and officers work around the clock to secure the border between El Paso, Texas, and Ciudad Juarez, Mexico."

"Agents chase smugglers in a dangerous high-speed pursuit."

"Agents patrol the Rio Grande Valley in southernmost tip of South Texas. They catch drug smugglers burying contraband in tanker trucks and illegal immigrants sneaking around highway checkpoints in the middle of the night."

"Agents persue a pickup truck loaded down with drugs ferried from Mexico; a routine vehicle inspection uncovers a large stash of heroin."

"A search team races to rescue a mother and her son who were abandoned by smugglers in the brush."

"Agents put themselves in harm\u2019s way searching for armed smugglers fleeing a shoot-out with the Mexican military. Once at the riverbanks, they find a suspected smuggler who has been shot five times. Their mission quickly changes as they rush to save the man\u2019s life."

"Drug smuggling has reached \u201cTexas-sized\u201d proportions in the Rio Grande Valley. A canine unit detects a suspicious vehicle coming in from Mexico, and agents discover a massive quantity of methamphetamine concealed within."

"Law enforcement battles to intercept the massive flow of illicit traffic moving through the Rio Grande Valley. Agents in McAllen, Texas, track a group of illegal immigrants in the dark and find themselves outnumbered in a large field."

"The Rio Grande River serves as a highway for illegal traffic and dangerous crossings. As the Department of Homeland Security\u2019s surveillance intensifies, powerful drug cartels and human smugglers are trying more desperate tactics."

"In the southern border towns of Douglas and Nogales, Ariz., agents uncover new and more cunning methods smugglers create to avoid detection, including a drug tunnel under the border."

"Along the southern Arizona border at the port of entry, agents detain two families within a 24-hour period, driving similar SUVs and carrying a combined total of nearly $1 million in cash and drugs."

"A Blackhawk helicopter leads ground agents on an epic chase after an illegal immigrant through treacherous mountains near Douglas, Ariz. A live surveillance camera alerts Border Patrol agents to a known fence coyote who tries to guide illegal immigrants into downtown Nogales."

"Border Patrol agents cut off a getaway car as it tries to flee the scene of a drug drop in ranchland east of Nogales, Ariz. Agents arrest the driver and seize the drugs, then pursue the smugglers."

"Downtown, Border Patrol and ICE agents discover a major drug-running tunnel and suspected smugglers may still be inside. With cartels watching their every move, they must risk their lives to map and destroy it."

"In Puerto Rico, agents keep a high-value drug seizure from South America secure as they transport it back to San Juan. They also use a DASH 8 plane and radar to find and seize a small drug-running boat in the dangerous Mona Passage."

"Agents in Puerto Rico enter one of San Juan\u2019s most notorious housing projects for an undercover \u201cbuy and bust\u201d operation to intercept a dump truck full of cocaine, and race to find illegal immigrants who have landed on a secluded beach."

"When the Coast Guard rescues Cuban refugees from a remote island in the Mona Passage, Customs and Border Protection agents must race to intercept them and verify their identities."

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

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

"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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"In the Rio Grande Valley, money has become something of a drug \u0097 corrupting people's lives and luring them into believing in its broken promises. Officers at the Brownsville Port of Entry are performing a \u0093blitz\u0094 enforcement operation \u0097 random searches for contraband \u0097 to deter the onslaught of smugglers. In nearby Laredo, Lucky and the narcotics unit hunt down desperate heroin dealers who are selling hits of black tar in school zones for $20."

"Follow along as border patrol agents hunt down drug runners and illegal immigrants trying to cross the border and sneak into the U.S. any way they possibly can."