Which of the following is NOT a key element reported to headquarters during an incident?

The correct choice highlights that public perceptions of police effectiveness are not typically considered a key element that needs to be reported to headquarters during an incident. Instead, communication during an incident focuses on immediate operational details that can affect response actions and resource allocation.

The type and size of an incident provide essential context for response teams and command centers, making it critical to relay these details swiftly. The need for evacuation is a crucial element that can directly impact public safety and requires immediate attention. Similarly, any additional resource requirements are vital for ensuring all necessary assets are deployed to manage the incident effectively.

In contrast, public perceptions of police effectiveness do not have immediate implications for ongoing operations during an incident. While this information can be valuable for overall departmental assessment and public relations, it is not a priority concern during the active management of a situation. Therefore, this choice appropriately identifies a key element that is not typically included in immediate incident reporting.