Which characteristics align with an Incident Type that might require a written IAP and involves some or all of the command and general staff?

An Incident Type characterized by the need for a written Incident Action Plan (IAP) and the involvement of some or all members of the command and general staff is typically classified as Type 3. This type of incident is often more complex than smaller incidents, requiring structured management and coordination.

Type 3 incidents typically involve multiple agencies or jurisdictions, necessitating a more detailed level of planning and operational management compared to lower type incidents. The requirement for a written IAP ensures that all team members are aware of the operational objectives, assignments, and resource allocations, thus facilitating effective communication and coordination across diverse teams.

In contrast, Type 4 incidents are usually less complex and may not require a formal IAP or the full command and general staff. Type 1 and Type 2 incidents, while also requiring an IAP, represent larger scale and more complex situations than a Type 3 incident, involving significant resources and multiple operational periods. Therefore, Type 3 is the correct classification for scenarios that fit the criteria of requiring a written IAP with appropriate command structure involvement.