I use to play nautil air mode but there is one problem! Nautil's 4 choppers not working compleat? They normal fight with lately units like tanks but they not working with early units like cavalry, cannon's... When you atack that units nothing happening, simply you can't attack them and when they attack choppers they destroy them without fight?! I look in "CIV4UnitInfos" and they are same like gunship but they not working corectly! 
