ANTI-AIRCRAFT GUNS [IMMOBILE]

When placed in cities bolster the defensive characteristics of the city Cannot be damaged by fighters An anti-aircraft gun will automatically defend against any fighter or bomber that flies over the city grid in which it is placed. So in order to drop a bomb on such a grid, the bomber must first survive a "flak barrage." Should succeed in shooting down the plane less than half of the time Should be moderately expensive An anti-aircraft gun in the same city as a radar installation will have a higher success rate (against planes which move directly over the ANTI-AIRCRAFT GUN). Only one Anti-aircraft gun per grid Once placed, an anti-aircraft gun cannot be moved from one city grid to another