The Air Force expects the F-35 program will begin fielding a fix this spring that will address problems with the A-model gun that have caused cracks in the muzzle. A recent report from the Pentagon's top weapons tester highlighted continued problems with the F-35A gun’s accuracy, which it attributed to a misaligned muzzle. That misalignment has caused cracks in the panel surrounding the muzzle and led to a decision by the Air Force to restrict gun use for low-rate initial...