24/7, 365 days a year, the Department of Homeland Security works to you keep you safe in the air, on land, at sea, and in cyberspace. Here’s a sample of what we do to protect the American people, our homeland, and our values.








24/7, 365 days a year, the Department of Homeland Security works to you keep you safe in the air, on land, at sea, and in cyberspace. Here’s a sample of what we do to protect the American people, our homeland, and our values.