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  2. Defense Switched Network - Wikipedia

    en.wikipedia.org/wiki/Defense_Switched_Network

    In 1982, the DSN was designated by the Office of the Secretary of Defense (OSD) and the Joint Chiefs of Staff (JCS) as the provider of long-distance communications service for the DOD. The DSN is designated as a primary system of communication during peacetime, periods of crisis, preattack, non-nuclear, and post-attack phases of war.

  3. List of North American Numbering Plan area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_North_American...

    2023: returned to the pool of area codes available for future area code relief; 457: Louisiana (Shreveport–Bossier City, Monroe, Alexandria, Fisher, Tallulah, and most of northern Louisiana) September 25, 2025 [3] to be overlaid on 318; previously a fictitious area code assigned to identify Naked DSL/Dry Loop and dedicated data lines in ...

  4. List of Tennessee area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_Tennessee_area_codes

    The 629 overlay for the entire area code was made effective in 2015; 731 - Jackson, Dyersburg, Union City : Initially split from 901 in 2001. 865 - Knoxville: Initially split from 423 in 1999. 901 - Memphis: An original NANPA area code, initially covering the entire state in 1947.

  5. Autovon - Wikipedia

    en.wikipedia.org/wiki/Autovon

    The history of Autovon and DSN (1992) Aerial view of a repeater hut with buried cable route visible from SW to NW, Google Maps. AUTOVON switch locations in CONUS, mid-1970s; Use of pre-emption - VOICE PRECEDENCE SYSTEM CHART - Global Autovon Telephone Directory 1971; AUTOVON; AUTOmatic VOice Network (AUTOVON) instructions

  6. Ten-digit dialing - Wikipedia

    en.wikipedia.org/wiki/Ten-digit_dialing

    For example, the Fort Knox Army base in Kentucky is served by area code 502, but its local calling area includes cities that are served by the 270/364 overlay complex. As a result, Fort Knox imposed ten-digit dialing for all off-base numbers when the 270/364 overlay was established in 2014. [5] Area codes (in blue) affected in the lower 48 states.

  7. Fort Knox - Wikipedia

    en.wikipedia.org/wiki/Fort_Knox

    Fort Knox is a United States Army installation in Kentucky, south of Louisville and north of Elizabethtown. It is adjacent to the United States Bullion Depository (also known as Fort Knox), which is used to house a large portion of the United States' official gold reserves , and with which it is often conflated.

  8. List of United States Army airfields - Wikipedia

    en.wikipedia.org/wiki/List_of_United_States_Army...

    Fort Leonard Wood: Missouri: KTBN Fort Harrison Army Airfield: Fort Harrison: Montana: MT15 Godman Army Airfield: Fort Knox: Kentucky: KFTK Gray Army Airfield: Fort Lewis: Washington: KGRF Grayling Army Airfield: Camp Grayling: Michigan: KGOV Hagler Army Airfield: Camp Shelby: Mississippi: KSLJ Henry Post Army Airfield: Fort Sill: Oklahoma ...

  9. 554th Engineer Battalion (United States) - Wikipedia

    en.wikipedia.org/wiki/554th_Engineer_Battalion...

    The U.S. Army 554th Engineer Battalion left Fort Knox, Kentucky, in 1967; in California it boarded a ship for Vietnam.It was based at Cu Chi, Vietnam, from 1967 to 1969 with some elements at Phu Loi.