Prevention. -- Terrorism -- 14 National security -- 9 Government policy -- 4 Evaluation. -- 3 Security measures 3 War on Terrorism, 2001-2009 3 more ... Aeronautics, Commercial -- 2 Civil defense -- 2 Intelligence service -- 2 Air power -- 1 Business -- 1 Business enterprises -- 1 Civil rights -- 1 Economic aspects 1 Effect of terrorism on 1 Emergency management -- 1 Fear of crime -- 1 Foreign relations 1 Foreign relations -- 1 Industries -- 1 Information warfare -- 1 Internal security -- 1 International cooperation 1 Law and legislation -- 1 Law enforcement -- 1 Military policy 1 Nuclear weapons information -- 1 Planning. -- 1 Political violence -- 1 less ...