US Navy: The maritime warfare service branch of the United States Armed Forces, headquartered at The Pentagon, Virginia. The US Navy is dedicated to maintaining combat-ready naval forces, deterring aggression, and ensuring global freedom of the seas. Its main areas of focus include sea control, power projection, maritime security, naval aviation, research, and special operations. Recognised as the world’s most powerful navy, it has made significant contributions to technological advancements, global conflicts, and space exploration.