Columbia subject headings:
Civil defense--United States.
Intergovernmental cooperation--United States.
National security--United States.
Public administration--United States.
Terrorism--United States--Prevention.
United States--Politics and government.
Harvard subject headings:
Civil defense--United States
Intergovernmental cooperation--United States.
National security--United States
Public administration--United States
Terrorism--United States--Prevention
United States--Politics and government.
Princeton subject headings: