Tri-Service
Polar Roar: Mammoth Bombers Fly Around North Pole
Two US B-52 bombers have flown around the North Pole in a marathon 23-hour flight.
B-2 Spirit stealth bombers and British Typhoons from the NATO Baltic Air Policing mission also took part in 'Exercise Polar Roar'.
A KC-135 Stratotanker, based at RAF Mildenhall, refuels a US Air Force B-52 Stratofortress over Scotland
It's seeing bomber crews from different nations working together and performing intercept training and inert weapon drops.