The first international F-35 Lightning II rolled out of the factory in Fort Worth, Texas, on 20 November 2011. The United Kingdom Ministry of Defence will use the short takeoff/vertical landing aircraft, known as BK-1, for training and operational tests. BK-1 will undergo functional fuel system checks before being transported to the flight line for ground and flight tests in the coming months. The F-35B is scheduled to be delivered in 2012.
