What should be checked first when preparing to fight a fire with an aerial apparatus?

When preparing to fight a fire with an aerial apparatus, checking seatbelt fastenings first is critical for ensuring the safety of all personnel on board. The use of seatbelts is essential to prevent injuries during emergency maneuvers, especially considering the high-risk environment that aerial operations involve. Depending on the situation, the aerial apparatus may need to move quickly or maneuver into challenging positions, and secure fastening of seatbelts helps to stabilize crew members and reduces the risk of accidents.

While other checks, such as water supply pressure, emergency lighting, and gauges, are also important in preparing for operation, ensuring that all personnel are properly secured is the foremost priority. This approach establishes a safe foundation before addressing other operational checks that contribute to the overall readiness of the aerial apparatus in a fire response situation.