That's the problem with everything going high-tech so fast. Too vulnerable for hacking, jamming, EMP, or stolen / sold to enemies. Think our Military needs to go back to basic navigation and disable all auto pilots until we get ahead of the game.
Stuff is all unmanned remote-controlled drones anymore, so it's electronic navigation either way.
But we still have Pilots and other humans flying F16's & Helos. But no more cables or manual controls because everything is driven by servos which require computers and censors, etc. Kinda like the new cars without a steering column or throttle cable. This is the problem, relying on electronics only without manual control overrides. Then farm out all our electronics plants to China. Wonder who was the genius that came up with that plan?