Which engine FMO is responsible for covering the fire department connection for the sprinkler system if it is separate from the standpipe connection?

The correct choice indicates that the engine designated as the third-in is responsible for covering the fire department connection (FDC) for the sprinkler system when it is separate from the standpipe connection. This is important as it highlights the specific roles and responsibilities that different engines assume during firefighting operations.

In a typical response scenario, the first-in engine usually takes the lead in establishing water supply and managing initial fire attack. The second-in engine often assists or provides additional support for these efforts, such as setting up backup lines or providing manpower. The third-in engine plays a critical role by ensuring that other necessary connections, such as the FDC for sprinklers, are appropriately managed during an incident where multiple water supply points are involved. As such, the third-in engine effectively ensures that hydration for the sprinklers is maintained, which is essential for the overall fire control strategy.

This sequence reinforces the standard operating procedures by clarifying incident command and operational hierarchy, ensuring that each resource is used effectively for the best outcome during emergency responses.