Office of Naval Intelligence

The Office of Naval Intelligence (ONI) is the intelligence service of the UNSC Navy. The organisation is responsible for UNSC signals intelligence (SIGINT), human intelligence (HUMINT), counter-espionage, propaganda, and top-secret research and development programs. 
== Divisions ==
=== Section Zero ===
Section Zero is ONI's Internal Affairs department, charged with rooting out and eliminating illegal programs. Section Zero is very discreet in its work; the true nature and activities of the division are highly classified and unknown outside the ONI command hierarchy. However, it appears that the other sections of ONI know Section Zero exists and while they are successful at deceiving Section Two, Sections One and Three are not as easily lied to and all three other sections are not easily spied on.
=== Section One ===
Section One is the proper intelligence-gathering branch of ONI. As such, the section's services are most often utilized by UNSC forces. Its responsibilities include information gathering and codebreaking through military espionage. Information released by Section One includes evacuation notices for colony worlds and Covenant force deployments. Section One was responsible for covering up all information on locations ONI wishes to keep hidden from the public eye, such as Onyx.
=== Section Two ===
Section Two is the propaganda branch of ONI; they are also responsible for psychological operations. Overtly, however, Section Two only deals with external communication and public morale. It handles communication between colonies to reduce the spread of rumors and information that would damage morale. It was responsible for releasing details of the SPARTAN-II program to the public to boost morale throughout UEG territory. Once information about the Spartans was released to the public, Section Two had to maintain the Spartans' near-mythical status within the military by listing those killed in action as MIA. It was believed that news of Spartan deaths would cripple the UNSC's already-flagging morale.
=== Section Three ===
Section Three is the top-secret projects division of ONI that oversees the various groups responsible for creating new innovations through the use of advanced alien technology. It is responsible for the SPARTAN-II and SPARTAN-III programs and many other black operations. Though a few of Section Three's programs are well-known and are widely celebrated for their success, the UNSC Marine Corps and top brass of the UNSC treat most with contempt. This is especially true of the Spartans, who are regarded as "freaks" by some humans. Though its overall purpose is unknown, Section Three's Beta-3 Division is known to analyze captured Covenant technology such as the Kig-Yar point defense gauntlet. In addition to performing black operations, Section Three's Beta-5 Division operates the SPARTAN-III program, which is kept secret from the majority of Section Three. This compartmentalization is designed to ensure secrecy and security.
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