(Usable artillery.)

(Apparently it can only be used by members of the Elyos Legion that captured the fortress.)

(The artillery seems to be working perfectly.)

You use the Artillery. You finish the investigation.

(A usable artillery.)

(Apparently, it can only be used by the members of the Elyos Legion that took the fortress.)

You finish the investigation.

(A usable Artillery.)

(It seems to be defective and not functioning.)

You finish the investigation.

(You successfully use the artillery.)

(Artillery skills can now be used.)

You finish the investigation.