The United States Naval Aviation service is the second largest air force in the world, and the roles of its frontlineoperational units make it ready to deploy when called on. Whether that is for expeditionary or amphibious warfare, nuclear-powered aircraft carriers, and air wings, or in the shape of manned and unmanned platforms, rotary and fixed-wing aircraft, no other service or community can deliver the capabilities US Naval Aviation offers. Naval manned and unmanned assets represent the most widely distributed aviation service in the world. The Carrier Strike Groups (CSGs) are based on large- deck, nuclear-powered aircraft carriers (CVNs) and their embarked Carrier Air Wings (CVW). The remainder of United States Naval Aviation operates primarily in support of the CSGs and Expeditionary Strike Groups (ESGs).