What does extending the ladder while responders are on it violate?

Extending the ladder while responders are on it violates safety protocols because such an action can potentially jeopardize the safety of the personnel positioned on the ladder. Safety protocols are established guidelines designed to mitigate risks and protect firefighters from accidents or injuries during their operations. When a ladder is extended with personnel aboard, it can lead to instability or an increased risk of falls, as the ladder may not be designed to safely support weight during extension.

Safety protocols emphasize the importance of ensuring that ladders are fully deployed and stable before allowing anyone to climb on them. By adhering to these protocols, responders can minimize risks and ensure more effective and safer firefighting operations. The other considerations, such as legal regulations, environmental factors, and operational guidelines, do play an important role, but in this scenario, the immediate risk to personnel underscores why safety protocols take precedence.