About 50 aircraft, including Swedish Gripen fighters, are taking part in the Air Force's main annual exercise through Saturday. The Karelia Air Command plays the role of the attacker in the manoeuvres.
RAF and Finnish fighter jets conduct Joint Expeditionary Force exercises in the High North raf.mod.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from raf.mod.uk Daily Mail and Mail on Sunday newspapers.