2017 HME W Cab. Four person cab. Engine 3 carries 750 gallons of water, a 1,500 GPM pump, a class- A foam system and an assortment of hand lines. This apparatus is used for rolling drills, hand line deployment, hose and stream class and general fireground operations for the hands-on portion of the academy’s Firefighter I and Firefighter II classes. Engine 3 is also used for driver/operator training.