The US Air Force has begun operating a new modification of the F-15EX Eagle II fighter with additional compatible fuel tanks. Two planes from the Oregon National Guard's 142nd Airlift Wing are already flying with tanks installed. The new equipment increases the fuel supply by about 5,700 liters per aircraft, while retaining wing suspension units for armament. However, unlike suspended tanks, compatible tanks cannot be thrown into flight. They remain part of the aircraft throughout the mission, increasing mass and creating additional aerodynamic drag. Each tank holds about 750 gallons of fuel, and a pair holds about 1,500 gallons. This can increase the duration of patrols, increase the time spent in the combat zone and reduce the dependence on the tank aircraft. @WarPeace And You.