The funny thing is that in order to defend against the attacks of hovers, you need several stingers and they will never be able to attack the base. Against shields, it is required to build an EMP mill in the form of aviation, AH YES! Two felons will destroy any aircraft instantly. For some reason, felon is the best anti-aviation unit in the game, after artemis.

You can enjoy the balance only if you play with the enemy in the same factory

I found that 3 lances can destory shield balls especally if you target fire felons