Russia's A-10: The Sukhoi Su-25

Flying low would also help the Su-25 avoid all the deadly long-range SAMs that would have been active in a European battlefield. However, this would have exposed it to all kinds of antiaircraft guns. Thus, the pilot of the Su-25 benefited from an “armored bathtub”—ten to twenty-five millimeters of armor plating that wrapped around the cockpit and even padded the pilot’s headrest.