For years North Korea has dispatched illegal agents to the United States via third countries where they have been busy establishing fifth columns capable of inflicting damage from close quarters, should the need arise. While North Korea's leaders taunt the U.S. with intercontinental missiles capable of reaching U.S. shores, the North Korean Intelligence Service is putting saboteurs into U.S. communities where they establish themselves in unassuming positions in the private sector, academia and even government, awaiting the day they are called to action. Maybe they'll be called upon to disrupt a critical supply chain, sabotage a critical piece of infrastructure such as the water supply, the national electric grid, or food supply."--