Since Airships don't have minimum movement, what are the rules for changing facing (or turning) by them? All Aerodyne units from Fighters to DropShips get a free facing change per minimum movement, and they can buy more for Thrust (plus some Special Maneuveres can change facing), but since Airships have no minimum movement, and can't perform Special Maneuveres, they need different rules for that, but I can't find those anywhere.