Mexican soldiers stand guard outside a building called "Mini Warehouses of the Border" in Tijuana April 4, 2014. U.S. federal agents have uncovered two drug-smuggling tunnels underneath the ... more 
Mexican soldiers stand guard outside a building called "Mini Warehouses of the Border" in Tijuana April 4, 2014. U.S. federal agents have uncovered two drug-smuggling tunnels underneath the U.S.-Mexico border, both surfacing in San Diego-area warehouses and equipped with rail systems for moving contraband, officials said on Friday. Federal law enforcement officials said the first tunnel, which connects a warehouse in Tijuana, Mexico, with one in an industrial park in the border community of Otay Mesa, is about 600 yards long and is furnished with lighting, a crude rail system and wooden trusses. Picture taken April 4, 2014. REUTERS/Jorge Duenes (MEXICO - Tags: DRUGS SOCIETY CRIME LAW MILITARY) less 
1 / 2
Reuters | Photo By STRINGER/MEXICO / REUTERS
Sat, Apr 5, 2014 2:21 PM EDT