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Rio Grande's deserted migrant trails show evidence of new drug traffickers

Tunnel Vision

The battle against drug traffic moves below ground to Nogales Arizona’s narco-tunnels. And when night falls, the chase is on as cartels take the fight aboveground and Border Patrol races to respond.

Tunnel Vision

The battle against drug traffic moves below ground to Nogales Arizona’s narco-tunnels. And when night falls, the chase is on as cartels take the fight aboveground and Border Patrol races to respond.

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