U.S. Air Force Doctrine Annex 3-27 Homeland Operations December 2018 is the umbrella construct with which it supports Homeland Defense and Defense Support to Civilian Agencies. It incorporates all operations planning and execution designed to detect, preempt, respond to, mitigate, and recover from the full spectrum of incidents and threats to the homeland, whether manmade or natural. The geographic homeland boundaries include the 50 states, four territories, and numerous island possessions.4 The US also enjoys exclusive sovereignty 12 nautical miles out to sea and exercises responsibilities extending 200 nautical miles from the coast. Homeland security is a national objective to protect the American people, the homeland, and the American way of life. The Air Force supports this objective via homeland operations.