What should be checked for when placing an Aerial Ladder into operation?

When preparing to place an Aerial Ladder into operation, several critical safety measures must be followed to ensure stability and proper function. Lowering the stabilizers is essential as they provide a solid foundation, preventing tipping or shifting during operation. Additionally, placing wheel chocks is important to secure the vehicle and prevent it from rolling, adding another layer of safety while the ladder is in use. Checking that safety pins are in the highest position is also vital, as this confirms the proper positioning of the ladder sections and ensures that they are securely locked in place before extending the ladder.

Each of these actions contributes to the overall safety and effectiveness of the aerial ladder operation. Ensuring that all of these steps are completed helps prevent accidents and ensures that firefighters can operate the apparatus safely and effectively in emergency situations. Hence, it's crucial to recognize the importance of every component listed, making the choice that encompasses all of them the appropriate selection.