The Association of State and Territorial Directors of Nursing vision for emergency preparedness is that every community, family, and individual will have a comprehensive emergency preparedness plan that minimizes the consequences of disasters and emergencies, and enables communities, families, and individuals to respond and recover. This position paper provides national and state policy guidance during emergencies to all public health nurses in the United States and its Territories. Public health nurses bring critical experience to each phase of a disaster: mitigation, preparedness, response, and recovery. Public health nurses strive to achieve individual competencies so that they may better collaborate with others and contribute to emergency preparedness and response. Twelve Emergency Preparedness Competencies are listed in this position paper that will assist public health nurses with disaster prevention, planning, response, recovery, drills, exercises, and training. This position paper will be useful in clarifying the expertise that public health nurses can contribute to teams that serve to protect the health and safety of communities against disaster threats and realities.