Norrbotten Wing (Swedish: Norrbottens flygflottilj), also F 21 Luleå, or simply F 21, is a Swedish Air Force wing with the main base located in Luleå Airport in northern Sweden. It is one of the three remaining wings in Sweden and currently has two squadrons of multirole aircraft. F 21 in the north and F 17 in the south are the two wings remaining to have operational squadrons. F 7 is a school where pilots begin their training in the JAS 39 Gripen. Once completed the pilot's training is moved out to the two operational wings where they acquire their final training.