You always want a human in the loop. FDS sometimes drives into trucks or disengages randomly. Automated defence systems shoot at stuff they consider to be a thr

You always want a human in the loop. FDS sometimes drives into trucks or disengages randomly. Automated defence systems shoot at stuff they consider to be a threat, and that can be anything from non-combatants to friendlies. Or just the enemy, but the particular attack might be a diversion, hence a human might hold the defence back. Also just for stealth, radar is a giant beacon leading right to back to you. As is a rapid fire 20 mm cannon. Unless we have General AI, in which case, well, you'd still want a human in the loop, just at different level.