Emergency management Disaster relief 169 Disasters 126 Natural disasters 103 Crisis management 90 Prevention 84 Terrorism 76 more ... Risk management 62 Government policy 61 Planning 61 Social aspects 53 Risk assessment 49 Disaster medicine 47 Hurricane Katrina, 2005 46 Civil defense 45 Safety measures 45 Emergency medical services 44 Hazard mitigation 41 Security measures 41 National security 36 Public health 34 Business planning 33 Management 31 Climatic changes 30 Health aspects 28 History 25 Medical emergencies 25 Preparedness 25 Bioterrorism 23 Evaluation 23 less ...