Tonight York Village Fire conducted drills on reverse lays. A reverse lay is when the apparatus stops at the fire then lays hose out to the hydrant with the Engine Co. ends up staying at the hydrant to pump back to the fire. Tonight Engine 6 reverse laid 400′ of 4″ supply hose to the hydrant and supplied Truck 8’s aerial master stream. Shortly after that Engine 4 arrived on the scene and took a 4″ supply line from Truck 8’s pump and fed its deck gun. At the height of the drill approximately 1000 gallons of water per minute was flowing.