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.
A special undercover group shuts down a house in Nogales, the quarters of suspected illegal immigrants. The agents are faced with the challenge of singling out the human smugglers, or "coyotes," and getting these suspected criminals off the streets.
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.
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 - breaking an all-time record for drug busts at this port of entry.
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.
