This volume provides a history and analysis of the political and policy processes of federal government involvement in emergency management from 1900 through 2010. This second edition provides background for understanding political, policy, and other essential aspects of emergency management, including identifying and developing the key time bands of information about emergency management from 1900 to 2010. The book covers updates to policy, shifts in the DHS and FEMA, and responses to disasters over the last 5+ years including considerable coverage of the BP oil spill.