The head of the F-35 Joint Strike Fighter program expects the $400 billion fighter jet program to lift itself out of the concurrency “rut” by about 2017 or 2018 as the number of aircraft and engine faults discovered during developmental testing continues to decline. This week, the Government Accountability Office warned that the costs associated with retrofitting already-built Joint Strike Fighters will likely increase as the Defense Department ramps up procurement quantities over the next five years. The services plan...