"The Department of Homeland Security (DHS) was formed in the wake of the terrorist attacks of September 11, 2001, as part of a deliberate and determined national effort to safeguard the United States against terrorism. […] The submission of the Quadrennial Homeland Security Review (QHSR) Report to Congress on February 1, 2010 marked an important first step in a multi-step process to examine and address fundamental issues that concern homeland security. The QHSR Report described the Nation's homeland security interests, identified the critical homeland security missions, and defined a strategic approach to those missions by laying out the principal goals, essential objectives, and key strategic outcomes necessary for that approach to succeed. A bottom-up review (BUR) of the Department of Homeland Security was initiated in November 2009 as an immediate follow-on and complement to the congressionally mandated QHSR with the aim to align the Department's programmatic activities and organizational structure with the broader mission sets and goal identified in the QHSR. This report reflects that endeavor and represents an intermediate step between the QHSR Report and the DHS FY 2012-2016 Future Years Homeland Security Program (FYHSP), which will propose specific programmatic adjustments based on the QHSR strategic framework. Together, these three elements--the QHSR, the BUR, and the DHS FY 2012-2016 FYHSP--will address the primary legislative requirements set forth in Section 707 of the Homeland Security Act."
Department of Homeland Security: http://www.dhs.gov/index.shtm