What must be present if the hose line exceeds 1000 feet?

When a hose line exceeds 1000 feet, the presence of additional pumps to relay the water is vital to ensure adequate water pressure and flow. Over long distances, water pressure can diminish significantly due to friction loss within the hose, which can reduce its effectiveness for firefighting operations. By employing additional pumps—as a relay system—it is possible to maintain sufficient pressure throughout the entire length of the hose line, ensuring that water can reach the required firefighting area effectively. This is a critical aspect of maintaining operational capability in firefighting scenarios where extended hose lengths are necessary.

Using additional firefighting personnel or additional water sources could enhance overall operations but would not directly address the hydraulic challenges posed by long hose lines. Similarly, utilizing hoses of smaller diameter might further decrease flow capability and increase the likelihood of pressure loss, making it counterproductive in this context.