What might a responder observe if a truck is stable during a rescue operation?

A responder observing a truck that is stable during a rescue operation would indeed look for no movement or shifting of the vehicle. This stability is crucial as it indicates that the vehicle has not shifted during the rescue efforts, which helps ensure the safety of both the responders and any victims that may be inside or around the truck. A stable vehicle allows responders to perform their tasks without the added risk of sudden movements that could lead to further injury or complicate the rescue effort.

While fluid leaks, smoke, and unusual sounds from the engine can indicate problems and may need to be addressed, they do not directly relate to the vehicle's stability at that moment. In contrast, the absence of movement signifies a safe environment for responding teams to continue their work effectively.