According to NFPA 1936, powered rescue tools must have what feature to ensure operational safety?

The requirement for powered rescue tools to have a dead-man control feature is crucial for ensuring operational safety. A dead-man control is a safety mechanism that stops the tool's operation if the operator's hand is removed from the control handle. This design helps to prevent accidental injury to the operator or others nearby by immediately stopping the tool in case of an emergency, such as the operator losing grip or control due to an unforeseen incident.

This safety feature is essential in high-stress rescue environments, where quick reactions can make a significant difference. By requiring that powered rescue tools include this control, NFPA 1936 emphasizes the importance of maintaining a safe working environment for first responders and ensuring that tools are only operated when actively controlled by an operator.

The other options, while they may enhance safety in different ways, do not provide the same immediate stop capability that a dead-man control does.