Software glitches continue to dog the nation’s newest fighter jet. Five of six Air Force F-35 fighter jets were unable to take off during a recent exercise due to software bugs that continue to hamstring the world’s most sophisticated—and most expensive—warplane. During a mock deployment at Mountain Home Air Force Base in Idaho, just one of the $100 million Lockheed Martin F-35s was able to boot its software successfully and get itself airborne during an exercise designed to test the readiness of the F-35, FlightGlobal reports. Nonetheless, the Air Force plans to declare its F-35s combat-ready later this year. Details...