I'm not sure if this has been asked before or perhaps changed from AT2 to Total Warfare, but per page 250 of Total Warfare, grounded Spheroid Dropships may only make Air to Ground attacks from the Nose arc. However, the Fortress, Polaris and Trutzburg dropships all carry some form of artillery in the nose. Checking Tactical Operations, neither the specific weapon information blocks nor the general artillery rules actually say that this rule is ignored while firing Artillery. So what do I do if I use one of these units on the table?