National Geographic goes beyond the controversy and political wrangling of illegal immigration to see the real-world battles being waged by the men and women responsible for securing our borders. Every day, they intercept an illicit flow of narcotics, money and weapons headed both north and south across the border. The risks have never been higher, with the violence of the Mexican drug wars a stone's throw from U.S. soil and criminals armed with increasingly sophisticated technology challenging the most rigorous countermeasures. Border Wars returns for a second season with 16 episodes of real-world pursuits, surveillance, interceptions, busts and rescue missions. In each episode, National Geographic takes viewers to the front lines of some of the busiest and most dangerous border crossing points into the U.S.-to experience firsthand the everyday battles fought by Customs and Border Protection officers and agents.