U.S. Fleet Activities Yokosuka is a naval base located in Yokosuka, Japan. It serves as the largest U.S. naval installation in the Asia-Pacific region, providing support for U.S. Navy operations and personnel. The base plays a crucial role in maintaining regional security and fostering partnerships with allied nations. Established in 1945, the base hosts various facilities, including ship maintenance, logistics, and housing for military families. It is home to the U.S. Seventh Fleet, which is responsible for naval operations in the Indo-Pacific area. The base also supports joint exercises and training with Japan Self-Defense Forces.