Emergency management Disaster relief 167 Disasters 124 Natural disasters 100 Crisis management 87 Prevention 83 Terrorism 75 more ... Government policy 61 Planning 61 Risk management 56 Social aspects 50 Risk assessment 49 Disaster medicine 46 Hurricane Katrina, 2005 46 Safety measures 44 Civil defense 43 Emergency medical services 43 Hazard mitigation 41 Security measures 41 National security 36 Public health 34 Business planning 32 Climatic changes 30 Management 30 Health aspects 27 History 25 Preparedness 25 Medical emergencies 24 Bioterrorism 23 Evaluation 23 less ...