side of the border. prime real estate for the cartels because it s close to the united states, a major highway and the rail ray. the battle for controls to control the belly has been foors. entire towns have been targeted without mercy, as cartel gunmen try to secure trafficking routes. people call this here the valley of death. on the other side of these tall steel gates is the town of mexico. it s a town under siege. residents say there s a war raging there. entire families have been chased out of the juarez valley. some have taken only what they can carry. authorities say to make sure they can t come back, their houses are burned down in a campaign of terror where people have also been kidnapped and beheaded. we found this man in a nearby town. we re protecting his identity because he fears for his life. he says he received a chilling phone call telling him to leave