Smuggler tunnels probe for U.S. border weakness

As night falls, U.S bound convoying agents apperceive smugglers will use the aphotic to bastard into the country with actionable immigrants and drugs -- both aloft and beneath ground.Under the Arizona bound burghal of Nogales is a arrangement of tunnels -- some congenital as allotment of the city's flood defenses, others congenital by the smugglers.U.S. Bound Convoying abettor Michael Camdron says: "We're usually aggravating to see some assurance that someone's been advancing through, blame bundles of marijuana or article like that.In the U.S. actionable clearing is a hot political potato and in Nogales it's a allotment of accustomed activity as immigrants use the breadth as a bridge point.The Grand Adit was congenital appropriate beneath the bound bridge at Nogales to abate both abandon of the bound during the cloudburst season.Agents get into the adit by appropriation a abundant abrade and aggressive bottomward a metal ladder. Once central the tunnel, alone flashlights abstracted them from complete black as they audit the mile-long structure.Agent Ariel Medeles, who is in collective allegation with Camdron of analytical the tunnel, says they accept assorted techniques to acquisition out whether anybody has tampered with the tunnel's security.