Which type of incident is characterized by severe physical harm?

The type of incident characterized by severe physical harm is a trauma incident. Trauma incidents typically involve significant injury or damage to an individual or individuals, often resulting from accidents, violence, or other high-impact events. These incidents are defined by their potential to cause serious, acute physical injuries such as fractures, lacerations, or other life-threatening conditions that require immediate medical attention.

In contrast, a medical incident could involve a wide range of medical issues, from minor ailments to severe conditions, but does not solely imply severe physical harm. A minor incident would generally refer to situations that do not involve any serious injury or extensive harm. An environmental incident might involve hazardous materials or natural disasters but doesn't inherently signify physical harm to individuals. Thus, trauma incidents are specifically focused on the severity and nature of the physical injuries involved.