DIA: Defense Intelligence Agency. See also JBAB.

DIAC: Defense Intelligence a.n.a.lysis Center.

DIAM: Defense Intelligence Agency Manual.

DIOCC: Defense Intelligence Operations Coordination Center. (Part of the DIAC.) DJ: Disc Jockey.

DLI: Defense Language Inst.i.tute.

DMV: Department of Motor Vehicles.

DMZ: Demilitarized Zone. In the context of a SCIF, the perimeter network segment that is logically between internal and external networks. Its purpose is to enforce the internal network's IA policy for external information exchange and to provide external, untrusted sources with restricted access to releasable information while shielding the internal networks from outside attacks. A DMZ is also called a "screened subnet." See also IA and SCIF.

Doc.u.ment: Any recorded information regardless of its physical form or characteristics, including, without limitation, written or printed matter, data-processing cards and tapes, maps, charts, paintings, drawings, photos, engravings, sketches, working notes and papers, reproductions of such things by any means or process; and sound, voice, magnetic, or electronic recordings in any form.

DOD or DoD: Department of Defense. See also DD.

DPM: Disruptive Pattern Material. A British military camouflage pattern, with colors similar to the U.S. Army's defunct woodland BDU pattern.

DRM: Direction du Reseignement Militaire. The French Directorate of Military Intelligence.

DRSN: Defense Red Switch Network.

DSArms: An American gunmaking company, founded by Dave Selvaggio.

DShK: Degtyaryova-Shpagina Krupnokaliberny, or "Degtyaryov-Shpagin Large-Caliber"-a 12.7mm Russian machine gun, later produced in several other communist nations. Informally called a "Dashika" by some users.

DSS: Diplomatic Security Service.

E Division: The RCMP division that polices all of British Columbia except Vancouver.

E&E: Escape and Evasion.

ELINT: Electronic Intelligence.

ELT: Emergency Locator Transmitter.

EMSEC: Emissions Security. Protection resulting from measures taken to deny unauthorized individuals information derived from intercept and a.n.a.lysis of compromising emanations from crypto-equipment or an information system. See also TEMPEST.

EPA: Environmental Protection Agency.

EQ2050: A Chinese Humvee equivalent vehicle.

E-Tool: Entrenching tool. (A small folding shovel.) ETS: Expiration of Term of Service.

FAA: Federal Aviation Administration.

FAL: See FN/FAL.

FAMAS: Fusil d'a.s.saut de la Manufacture d'Armes de Saint-etienne. The French army's standard-issue bullpup carbine, chambered in 5.56mm NATO. See also FeLIN.

FBI: Federal Bureau of Investigation.

FBO: Fixed Base Operator. Typically used to describe a small private airport's refueling facility.

FeLIN: Fanta.s.sin equipement et Liaisons Integres (Integrated Infantryman Equipment and Communications). The French infantry combat system of the 2000s. See also FAMAS.

FEMA: Federal Emergency Management Agency (a U.S. federal government agency). The acronym is also jokingly defined as: "Foolishly Expecting Meaningful Aid."

FFL: Federal Firearms License.

FHJ: 84A twin-barrel 62mm incendiary rocket launcher used by the Chinese PLA.

Field SCIF: See Tactical SCIF.

FIST: Fire Support Team.

FLB: Forward Logistics Base.

FLIR: Forward-Looking Infrared. A camera that can detect body heat as well as the heat vehicle engines.

FNC: a 5.56mm NATO battle rifle originally made by the Belgian company Fabrique Nationale (FN). See also Pindad SS2.

FN/FAL: A 7.62mm NATO battle rifle originally made by the Belgian Company Fabrique Nationale (FN), issued to more than fifty countries in the 1960s and 1970s. Now made as semiauto-only "clones" by a variety of makers including DSArms. See also L1A1.

FN-MAG: A 7.62mm NATO belt-fed light machine gun developed by FN of Belgium. It has been issued by more than eighty countries. The U.S. military uses several variants of the gun, under the designation M240. See also M240.

FOB: Forward Operating Base.

FOUO: For Official Use Only.

FRS: Family Radio Service.

FS: Field Station.

FSB: Federalnaya Sluzhba Bezopasnosti. The main successor to the KGB.

FSMA: Food Safety and Modernization Act.

Galil: The Israeli battle rifle, based on Kalashnikov action. Most were made in 5.56mm NATO, but a variant was also made in 7.62mm NATO, in smaller numbers.

GAZ: Gorkovsky Avtomobilny Zavod. A Russian car and truck maker.

GB: Gigabyte.

GCA: The Gun Control Act of 1968. The law that first created FFLs and banned interstate transfers of post-1898 firearms, except "to or through" FFL holders.

GDP: Gross Domestic Product.

GG: The "Excepted Service" pay-grade category for intelligence and national security positions. (GG pay-grade numbers are roughly equivalent to General Schedule [GS] civil servant pay grades.) Glock: The popular polymer-framed pistol design by Gaston Glock of Austria.

GMRS: General Mobile Radio Service. A licensed UHF-FM two-way radio service. See also FRS and MURS.

GMT: Greenwich Mean Time. Also known as Coordinated Universal Time (CUT).

GPS: Global Positioning System.

Green Door: Slang used in the intelligence community for restricted access to information and/or locations.

GS: General Schedule.

GTK: Gepanzertes Transport Kraftfahrzeug. A variant of the German eight-wheeled Boxer APC.

Ham: Slang for amateur radio operator.

HAROPA: The functionally combined ports of Le Havre, Rouen, and Paris.

H-E or HE: High Explosive.

HEI: High Energy Ignition.

Hesco: A military contractor best known for its prefabricated wire and fabric ballistic protection bastions.

HF: High Frequency. A radio band used by amateur radio operators.

High Side: A network for cla.s.sified traffic. High-side networks are always physically disconnected ("air gapped") from uncla.s.sified "low-side" networks. This prevents inadvertent or intentional "copy/paste" of cla.s.sified information into low-side messages. See also Low Side.

HK or H&K: Heckler und Koch, the German gun maker.

HK91: Heckler und Koch Model 91. The civilian (semiautomatic-only) variant of the 7.62mm NATO G3 rifle.

HMMWV: High-Mobility Multipurpose Wheeled Vehicle, also commonly called a Humvee, or in civilian trim, a "Hummer."

HQ: Headquarters.

HUMINT: Human Intelligence. See also CI.

Humvee: High-Mobility Multipurpose Wheeled Vehicle spoken "Humvee."

Hydro: Canadian slang for grid power or a power company, or a power bill. In Canada, all grid power is generically called "hydro" power, regardless of its actual origin.

IA: Depending on context, Information Architecture, Information a.s.surance, or Internal Affairs.

IBA: Interceptor Body Armor.

ICE: Immigration and Customs Enforcement.

ID: Identification.

IDS: Intrusion Detection System. A security alarm system to detect unauthorized entry to a secure facility.

IED: Improvised Explosive Device.

IFV: Infantry Fighting Vehicle.

IH: International Harvester.

IMP: Individual Meal Pack. Canada's standard field ration containing precooked entree packed in heavy-duty plastic-foil retort pouch. The equivalent of a U.S. Military Meal Ready to Eat (MRE).

INFOSEC: Information Security.

Intel: Slang shorthand for intelligence.

IR: Depending on context, Infrared or Intelligence Requirement.

Isolator: A device or a.s.sembly of devices that isolates or disconnects a telephone or CTS from all wires that exit the SCIF and that has been accepted as effective for security purposes. See also KSU.

IV: Intravenous.

JAG: Judge Advocate General corps. (Military attorneys.) JBAB: Joint Base Anacostia-Bolling (JBAB), the headquarters of the DIA, in Washington, D.C.

JBLM: Joint Base Lewis-McChord. (Formerly, Fort Lewis and McChord Air Force Base, Washington.) JP4: Jet Propellant 4, an aviation fuel.

JP5: Jet Propellant 5, an aviation fuel.

JWICS: Joint Worldwide Intelligence Communications System.

Kel-Tec: A Florida gun manufacturer specializing in polymer frame guns.

Kevlar: The material used in most body army and ballistic helmets. "Kevlar" is also the nickname for the standard U.S. Army helmet.

KIA: Killed in Action.

KJV: King James Version of the Bible.

KSU: Key Service Unit. An electromechanical switching device that controls routing and operation of an a.n.a.log telephone system. See also Isolator and Red/Black.

KTM: An Austrian manufacturer of motorcycles. The K and T are for the surnames of the business founders, Kronreif and Trunkenpolz. The M is for Mattighofen, Austria, the name of the town where the motorcycles are built.

L1A1: The British army version of the FN/FAL, made to inch measurements.

LAR-8: A variant of the AR-10 rifle that accepts FN/FAL or L1A1 magazines.

LAW: Light Ant.i.tank Weapon.

LC-1: Load Carrying, Type 1. (U.S. Army Load Bearing Equipment, circa 1970s to 1990s.) LDS: The Latter-day Saints, commonly called the Mormons. (Flawed doctrine, great preparedness.) LDSH: Lord Strathcona's Horse. A regular armored regiment of the Canadian army, headquartered in Edmonton, Alberta, Canada. Members of the regiment are commonly called Strathconas or Strats, for short.

LGP: Le Gouvernement du Peuple (The People's Government).