Attack pumpers have a minimum pump rating of 250 gpm at 150 psi and also a minimum tank capacity of 200 gallons. Other features of the attack pumper include either 300 feet of 2 inch or 400 feet of 1 inch or larger hose and one 12-foot ground ladder. Attack pumpers have an eight inches ground clearance with 8 angle of approach for firefighting operations.
In case of complex hydraulic problems like emergency and rescue incidents involving limited staffing, the attack pumper is considered as first response apparatus due to its quick application. When there is limited staffing in the fire ground ,attack pumpers are best application providing adequate compartment space necessary for gear and expected operational fir e fighting capabilities. It facilitates the first personnel in contact with the fire ground to respond immediately and start the rescue process before the arrival of other staff and emergency vehicles.