All three variants of the relatively new F-35 Joint Strike Fighter have failed to hit readiness targets entirely. That’s according to a recent report from the Government Accountability Office (GAO), a watchdog agency reporting on federal programs. GAO, which assessed all the nation’s tactical aircraft, found that no fighter planes are doing particularly well at meeting annual mission-capable goals – no Navy or Marine Corps platforms hit that target in the last six years – but the report’s data particularly underscores challenges faced by the F-35, despite maintenance and sustainment costs climbing at an unmatched rate. The report, which covers...