If you are driving a tank, you should never drive with _________.

Driving a tank with open valves is dangerous for several reasons. First, it can cause the tank to lose fuel, which can create a fire hazard. Second, it can cause the tank to lose hydraulic fluid, which can make it difficult to steer and brake the tank. Third, it can cause the tank to lose air pressure, which can cause the tank to lose traction and roll over.