Really, why even bother having AA guns
They are totally under-powered, and placed in a hole where you can't shoot the minute any pilot dives.
And if you can ever shoot down a plane, then they re-spawn immediately, so the pilot just starts again.
In addition there is usually 1 available AA for 2 or 3 planes, so eve if you start targeting one the other plane destroys your emplacement
Let the infantry have a real defense, bring back the FF as it was!!!