DHS stands for the Department of Homeland Security, which is a U.S. federal executive department responsible for public security. It was established in 2002, combining 22 different federal departments and agencies into a unified, integrated department. The department has a vital mission to secure the nation from the many threats it faces, and it employs more than 260,000 people in jobs that range from aviation and border security to emergency response and cybersecurity. The DHS protects the countrys borders and manages the flow of people and products into and out of the United States. Its duties are wide-ranging, and its goal is clear - keeping America safe.