A F-22 Raptor fighter jet of the 95th Fighter Squadron from Tyndall, Florida approaches for refuelling by a KC-135 Stratotanker from the 100th Air Refueling Wing at the Royal Air Force Base in Mildenhall in Britain as they fly over the Baltic Sea towards Spangdahlem airbase, Germany September 4, 2015. Four F-22 Raptors and some 60 airmen were deployed to Spangdahlem Air Base, western Germany, to train with allied air forces such as Poland and Estonia. The first-ever training deployment of the 5th fighter generation to Europe is part of the European Reassurance Initiative. REUTERS/Wolfgang Rattay