We outline a conceptual framework developed to meet the needs of public health professionals in the province of Ontario for incident management system-related education and training. By using visual models, this framework applies a public health lens to emergency management, introducing concepts relevant to public health and thereby shifting the focus of emergency preparedness from a strict “doctrine” to a more dynamic and flexible approach grounded in the traditional principles of incident management systems. These models provide a foundation for further exploration of the theoretical foundations for public health emergency preparedness in practice. (Disaster Med Public Health Preparedness. 2015;9:415–422)