. >> he worked at camp dewire in afghanistan, make $800 a month. in the entire year he worked there he only made about $2,000. the rest went to pay the agent. is he was strung long by five different agents, each of whom charged a fee. the department of defense requires that contractors ask workers whether they paid recruitment fees. but it isn't hard to see why so few people are comfortable telling the truth. >> do the contractors not know that their employees were trapped in debt or do they condone the abuses because they benefit in some way? to figure that out we have to retrace the path to the city. al jazeera america. >> dubai is critical. you'll see most of the contractors have their headquarters and incorporated in dubai. >> sam mccann is a former army jag officer who served in iraq and afghanistan. for the last couple of years he has campaigned to reform the military contracting system. >> people wonder why someone would take them across the ocean if there wasn't a contract? it gets into human trafficking. the trafficker gets paid when he le