ONI meaning in Military and Defence ?

The Office of Naval Intelligence (ONI) is the military intelligence agency of the United States Navy. Established in 1882 primarily to advance the Navy's modernization efforts, ONI is the oldest member of the United States Intelligence Community and serves as the nation's premier source of maritime intelligence. Since the First World War, its mission has broadened to include real-time reporting on the developments and activities of foreign navies; protecting maritime resources and interests; monitoring and countering transnational maritime threats; providing technical, operational, and tactical support to the U.S. Navy and its partners; and surveying the global maritime environment. ONI employs over 3,000 military and civilian personnel worldwide and is headquartered at the National Maritime Intelligence Center in Suitland, Maryland.