High Quality Content by WIKIPEDIA articles! The Office of Naval Intelligence (ONI) was established in the United States Navy in 1882. ONI was established to "seek out and report" on the advancements in other nations` navies. Its headquarters are at the National Maritime Intelligence Center in Suitland, Maryland. ONI is the oldest member of the United States Intelligence Community, and is also therefore by default the senior intelligence agency within the armed forces, though subordinate to the Defense Intelligence Agency.