洛克希德-马丁公司在得克萨斯州沃思堡工厂完成英国首架 F-35B(BK-1)战机总装。(First International F-35 Rolls Out of the Factory.The first international F-35 Lightning II rolls out of the factory on Nov. 20, 2011. The United Kingdom Ministry of Defence will use the short takeoff/vertical landing (STOVL) jet, known as BK-1, for training and operational tests.)