Infographic: A Day in the Life of DHS

Mark Lennihan/AP File Photo

Keeping all domains safe requires substantial work.

Twelve years ago in the aftermath of the Sept. 11, 2001, terrorist attacks, the Department of Homeland Security was established and consolidated 22 agencies into one organization. Its goal: prevent and respond to attacks and disasters -- manmade or otherwise -- and safeguard citizens

All 22 components have unique missions and plenty gets done in one day. Exactly how much is illustrated in DHS' daily to-do list: