What is the desired action when stopping a train from an emergency brake application?

When stopping a train in response to an emergency brake application, the correct action is to move the independent brake handle to develop the desired pressure. This action is essential because the independent brake system is designed to help control the train's speed more precisely during a stop, allowing for a smoother and more controlled deceleration.

Utilizing the independent brake handle allows the engineer to safely manage the braking power applied to the train. By developing the desired pressure, the operator can adjust braking force according to the conditions, which is crucial in maintaining control and preventing potential accidents during an emergency stop. This method also helps in preventing the risk of wheel slip or damage to the braking system.

In contrast, returning power to maximum or increasing throttle would not be appropriate as this would conflict directly with the objective of stopping the train. Fully releasing all brakes immediately is not advisable as it could lead to uncontrolled movement. Each of these options does not align with the safety protocols required when responding to an emergency situation in train operation.