The Third Fleet is a numbered fleet of the United States Navy that operates primarily in the Pacific Ocean. Established in 1943, it plays a crucial role in maritime security, providing naval support and conducting operations in various regions, including humanitarian assistance and disaster relief. Headquartered in Pearl Harbor, Hawaii, the Third Fleet oversees a range of naval assets, including aircraft carriers, submarines, and surface ships. Its mission includes maintaining readiness, conducting training exercises, and ensuring the safety of sea lanes, contributing to regional stability and international partnerships.