Big warships have big guns. The battleships had the largest artillery (see Guns Over Mobile) but even an older aircraft carrier, with all it's airplanes, still had a few aces up its sleeve. On the outside chance that another enemy vessel had to be fired upon, the USS Lexington was equipped with 4, twin 5 inch (127 mm) 38 caliber guns on turrets. Most of these types of weapons are out-dated with the use of guided missles, but they sure do look great sitting idle, as if waiting for its next victim. In the top right, you see the Lexington's bridge.
2013corpus christilexingtongun turret