U.S. Department of Homeland Security | 970,647 followers on LinkedIn. With honor and integrity, we will safeguard the American people, our homeland, and our values. | The Department of Homeland Security (DHS) has a vital mission: to secure the nation from the many threats we face. This requires the hard work of more than 260,000 employees in jobs that range from aviation and border security to emergency response, from cybersecurity analyst to chemical facility inspector. Our duties are wide-ranging, and our goal is clear - keeping America safe.