Base in the Tangled Green Questions

[Pennywise]

Check out the Base Fortifications in this thread. I think they might be what you're looking for, if you actually want the drones to engage in combat with intruding Primes or Secondaries.

Fortifications
A base can sometimes be a rough thing to defend. This becomes a bigger issue if your Base grows into a town or a sprawling city. Whether it comes in the form of a trained security force, defensive towers, or maybe just big walls, Fortifications exist to make your base more defensible.
Tier One Base Fortifications - 1000 OM Rudimentary fortifications don't provide much protection but are better than just locked doors. Maybe some doormen, a town garrison or traps. (Equivalent to 10% increase in defender's stats in strictly game terms).
Tier Two Base Fortifications - 3000 OM (2000 OM if replacing Tier One) A bit better, this might include turrets, more complex traps or better trained soldiers. (Equivalent to 20% increase in defender's stats in strictly game terms).
Tier Three Base Fortifications - 6000 OM (3000 OM if replacing Tier Two) This won't stop determined Primes, but this can certainly make the difference between victory and loss in a tight base defense. Get the best money can buy! (Equivalent to 30% increase in defender's stats in strictly game terms).