The attacks of 11 September 2001 served as a stark reminder of the importance of homeland operations. The defense of America's territory and air sovereignty quickly returned to the forefront of national discourse. Since 9/11, we have also seen the destructive power of nature in the form of Hurricane Katrina, many devastating tornadoes, and numerous wildfires throughout the country. AFDD 3-27 describes how our Air Force organizes and employs airpower in the homeland, whether in a Federal or State capacity. It focuses on providing support to civilian authorities in a variety of operations, from defense of the homeland to support for natural disasters. AFDD 3-27 represents our best practices for dealing with the complexities and special considerations encountered with the interagency process for conducting homeland operations.