The Royal Air Force tested a tactical fuel system in northern Norway, marking the first time the service refueled a heavy-lift military transport aircraft during harsh, adverse weather conditions inside the Arctic Circle.

The expeditionary refueling of the Atlas A400M occurred during Exercise Arctic Phoenix at Bardufoss Air Station (ENDU), RAF said Monday. The extreme cold weather exercise began earlier this month to train RAF personnel and test a range of service capabilities, including aeromedical evacuations and cold weather survival skills amid extreme arctic conditions with temperatures reaching minus-20 degrees Celsius (minus-4 degrees Fahrenheit) and with limited daylight.
