The USS John S. McCain (DDG-56) is a guided-missile destroyer in the United States Navy. Commissioned in 1994, it is named after John S. McCain Jr., a naval officer and father of the late Senator John McCain. The ship is part of the Arleigh Burke-class, designed for multi-mission operations, including anti-air, anti-surface, and anti-submarine warfare. The destroyer is equipped with advanced radar and weapon systems, including the Aegis Combat System. It has a displacement of approximately 9,200 tons and can reach speeds over 30 knots. The USS John S. McCain plays a vital role in maintaining maritime security and supporting U.S. naval operations worldwide.