If you add the upgrade to a military starbase that increases the defenses (gun, missile, beam) to your starfighters by +1, +2 etc., do they have to have that defense built on the ship to begin with? Meaning if you have a fighter with NO defense, the upgrade module is worthless? Im thinking the answer is yes, but I wanted to confirm it, when I try it in the game I never see the bonus added to the defense, but when I upgrade weapons I always see it, even if they dont have that type.