. >> sam mccahon is a former army jag officer who served in iraq and afghanistan. for the last several years, he has campaigned to reform the military contracting system. >> and when it comes to dubai, people wonder why would someone take them across the ocean if there wasn't a contract. it gets into human trafficking. the trafficker gets paid when they leave india at the airport the trafficker gets his commission. it doesn't matter if they have a job over there. >> subcontractors like ppi and ecolog run their middle east operations out of dubai. they keep labor camps here to house workers en route to military bases. and their recruiting agents have camps here too. >> away from the dazzling towers of dubai, a sprawling labor camp known as sonapur is home to hundreds of thousands of migrant workers from south asia. in hindi, sonapur means 'city of gold' - but in reality, it's more of a shanty town. it's this pool of labor that american subcontractors dip into to find workers for us military bases in afghanistan. >> what would happen if someone tried to apply for a j