F-35 fleet grounded for the eighth time over unknown engine issue

F-35 fleet grounded for the eighth time over unknown engine issue

As the cost of Lockheed Martin’s F-35 fighter jet continues to grow, so do the headaches: the United States military announced on Thursday that its entire fleet of aircraft has been grounded until engine inspections are completed. The decision comes as the Pentagon struggles to find the source of yet another problem with the $398.6 billion program.