Here is some help Buy the sensor upgrade for the orca,(just
need one orca for the job btw). Have the orca plant senors just a
very little distance from your base perimeter,then,with your
bombers equipped with air-to-air weapons,put them on guard
at the base perimeter and you will find they are very good at
stopping those air-raids-much more so than the aa-turrets.
aRAKANE