What is the last step after securing and decontaminating all tools?

Notifying all personnel involved is a crucial final step after securing and decontaminating all tools in a rescue scenario. This action ensures that everyone who participated in the operation is informed about the completion of the task and any safety considerations that need to be addressed. It enhances overall communication, allowing team members to discuss any relevant outcomes, observations, or experiences that may be valuable for future operations.

Maintaining clear lines of communication among the team also promotes a culture of safety and continuous improvement, as this notification can lead to feedback and reflections on the incident. It is an integral part of the incident response process, ensuring accountability and thoroughness in addressing any remaining concerns from the operation.

While the other options may be important steps in different contexts, notifying all personnel involved directly supports the overarching goals of safety and effective team coordination, making it the logical choice as the last step after securing and decontaminating tools.