Columbia subject headings:
Civil defense--Germany.
National security--Germany.
Risk assessment--Germany.
Harvard subject headings:
Civil defense--European Union countries--History--21st century.
Civil defense--Germany--History--21st century.
Emergency management--European Union countries--History--21st century.
Emergency management--Germany--History--21st century.
European Union countries--Military policy.
Germany--Military policy.
National security--European Union countries--History--21st century.
National security--Germany--History--21st century.
Technology--Risk assessment--European Union countries--History--21st century.
Technology--Risk assessment--Germany--History--21st century.
Terrorism--European Union countries--Prevention--History--21st century.
Terrorism--Germany--Prevention--History--21st century.
Princeton subject headings: