What is the minimum number of lines the D/E Candidate must connect to the FDC in Drill #7?

The requirement to connect a minimum of two 2 ½" lines to the Fire Department Connection (FDC) in Drill #7 is essential for ensuring adequate water supply and pressure when fighting a fire. Connecting two lines allows for a more reliable and sustained flow of water, which is critical in firefighting operations. With two lines, firefighters are able to enhance the volume of water available to combat the fire effectively, especially in larger structures or during significant fire events.

The use of 2 ½" lines specifically strikes a good balance between flow capacity and manageability for firefighters. This setup is often standard in training scenarios like Drill #7, as it prepares candidates for real-life operations where multiple connections may be necessary to effectively battle fires and support tactical operations.

In addition, utilizing two lines helps establish redundancy. If one line were to become compromised or experience issues, the second line would still provide a vital source of water. This redundancy contributes to the safety and efficacy of firefighting efforts, making it a critical aspect of the training for driver engineers.