Whether it is an active shooter, terrorist attack, natural disaster, major transportation accident, or pandemic, mass casualty incidents cause a significant strain on first responders providing necessary resources to care for the wounded and the deceased. Communities and their state counterparts are responsible for the coordination of resources and assets to support mass casualty and/or mass fatality needs. However, the need often exceeds available resources, requiring communities to effectively coordinate with nongovernmental organizations and whole community partners to address the needs of the affected population.