sentences:  The secondary battery of guns could hit targets nearly 9 statute miles (14 km) away with solid projectiles or proximity fuzed shells, and were effective in an anti-aircraft role as well.Each of the four battleships carried a wide array of 20 mm and 40 mm anti-aircraft guns for defense against enemy aircraft.When reactivated and modernized in the 1980s each battleship retained the original battery of nine guns, but the secondary battery on each battleship was reduced from ten twin-gun mounts and twenty guns to six twin-gun mounts with 12 guns to allow for the installation of two platforms for the Tomahawk missiles.