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  2. United States Department of the Navy - Wikipedia

    en.wikipedia.org/wiki/United_States_Department...

    The United States Department of the Navy (DON) is one of the three military departments within the Department of Defense of the United States of America.It was established by an Act of Congress on 30 April 1798, at the urging of Secretary of War James McHenry, to provide a government organizational structure to the United States Navy (USN); since 1834, it has exercised jurisdiction over the U ...

  3. the public. No. The Joint Worldwide Intelligence Communication System ( JWICS, / ˈdʒeɪwɪks / JAY-wiks) is the United States Department of Defense 's secure [citation needed] intranet system that houses top secret and sensitive compartmented information. JWICS superseded the earlier DSNET2 and DSNET3, the Top Secret and SCI levels of the ...

  4. Organizational structure of the United States Department of ...

    en.wikipedia.org/wiki/Organizational_structure...

    The Pentagon, headquarters of the United States Department of Defense.. The United States Department of Defense (DoD) has a complex organizational structure.It includes the Army, Navy, the Marine Corps, Air Force, Space Force, the Unified combatant commands, U.S. elements of multinational commands (such as NATO and NORAD), as well as non-combat agencies such as the Defense Intelligence Agency ...

  5. United States Department of Defense - Wikipedia

    en.wikipedia.org/wiki/United_States_Department...

    The National Military Establishment formally began operations on September 18, the day after the Senate confirmed James V. Forrestal as the first secretary of defense. The National Military Establishment was renamed the "Department of Defense" on August 10, 1949, and absorbed the three cabinet-level military departments, in an amendment to the ...

  6. United States Secretary of the Navy - Wikipedia

    en.wikipedia.org/wiki/United_States_Secretary_of...

    The secretary of the Navy ( SECNAV) is a statutory officer ( 10 U.S.C. § 8013) and the head ( chief executive officer) of the Department of the Navy, a military department within the United States Department of Defense . By law, the secretary of the Navy must be a civilian at least five years removed from active military service.

  7. SIPRNet - Wikipedia

    en.wikipedia.org/wiki/SIPRNet

    SIPRNet. The Secret Internet Protocol Router Network ( SIPRNet) is "a system of interconnected computer networks used by the U.S. Department of Defense and the U.S. Department of State to transmit classified information (up to and including information classified SECRET) by packet switching over the 'completely secure' environment". [1]

  8. Defense Message System - Wikipedia

    en.wikipedia.org/wiki/Defense_Message_System

    The Defense Message System or Defense Messaging System (DMS) is a deployment of secure electronic mail and directory services in the United States Department of Defense.DMS was intended to replace the AUTODIN network, and is based on implementations of the OSI X.400 mail, X.500 directory and X.509 public key certificates, with several extensions to meet the specific needs of military messaging.

  9. Uniformed services of the United States - Wikipedia

    en.wikipedia.org/wiki/Uniformed_services_of_the...

    The term "uniformed services" means—. (A) the armed forces; (B) the commissioned corps of the National Oceanic and Atmospheric Administration; and. (C) the commissioned corps of the Public Health Service. The six uniformed services that make up the armed forces of the United States are defined in the previous clause, 10 U.S.C. § 101 (a) (4 ...