Which incident type requires regional or national resources and can utilize up to 200 personnel per operational period?

The correct choice is Type 2 incidents, which are characterized by their complexity and resource requirements. Type 2 incidents typically require assistance beyond the capabilities of local or state resources and may necessitate a coordinated effort involving regional or even national support. The definition specifies that these incidents can utilize up to 200 personnel per operational period, indicating a substantial scale of response.

Type 2 incidents can include situations such as large wildfires, hurricanes, or other significant disasters where multiple agencies and a greater number of personnel are involved in the response and management. The scale and coordination required for these incidents necessitate established procedures and command structures to efficiently manage the resources being deployed. This is distinct from Type 1 incidents, which, while also complex, generally exceed the Type 2 scale in terms of resource use and personnel, indicating an even larger and more intricate operational need.