J – Juliet (JULIETT)

J-watch

J1

J2

J3

J4

J5

jack

jack and pinion rack

Jack-in-the-box effect

jack knifing

jack lift

jack lift point

jack pad

jack staff / jackstaff

jacket

jacket cast with the cylinder

jacket cooling

jacket hoop

jacket tube

jacketed

jacketed bullet

jacketed coated lead bullet

jacketed design

jacketed hollow-point bullet

jacketed round nose bullet

jacketed soft point (JSP)

jacking point cover plate

jackshaft

jackshaft differential carrier

jackshaft propeller shaft

jam

jam emissions (v)

jam pot

jam-resistant communication

jam the comm

jammed round

jammer

jammer hunter

jammer, search jammer

jamming

jamming battery

jamming device

jamming of beacons and blind landing (systems)

jamming signal

jamming station

jamming system

jamming transmitter

jankers

Japan Coast Guard (JCG)

Japanese sword

jarhead

JASSM-ER

Javelin (FGM-148)

jaw

jaw rudder

jaw spanner

jawing

jeep

jeep carrier

jeep trailer

jellied gasoline

jeopardize flight safety

jerk

jerk-pump fuel system

jerrycan = jerrican

Jesus nut

jet

jet action

jet aircraft

jet aircraft fuel

jet amplifier

jet-assisted take-off

jet blast deflector

jet blast deflector

jet booster

jet continuity

jet divergence

jet engine

jet exhaust

jet fighter

jet flap

jet flap

jet flap aerofoil

jet flap aerofoil section

jet fuel

jet impingement

jet impingement

jet navigation chart

jet noise prediction technique

jet nozzle

jet of fluid

jet-powered

jet projectile

jet-propelled

jet propulsion

jet-propulsion center

jet propulsion engine

jet pump

jet ring

jet robot

jet spread

jet standard atmosphere (JSA)

jet standard atmosphere (JSA)

jet stream

jet thrust

jet trainer

jet tube

jet vane

jet velocity

jetavator

jettison

jettison fuel tank kit

jettison nozzle

jettisonable auxiliary fuel tank

jettisonable gear

jettisoned mines

JFO-E candidate eligibility

JFO-E upgrade program

JFO-Evaluator (JFO-E)

JFO-Instructor (JFO-I)

jig the work

jihad

jimmy the one

jingo

job order

job selector

job work

jockey wheel

join battle

join forces / efforts

join hands

join the Army

join the colours / the military

joiner

joiner convoy

joining plate

joint

joint action

Joint Aerial Layer Network (JALN)

joint air attack team

joint air defense (JAD)

Joint Air Operations Center (JAOC)

Joint Air-to-Surface Standoff Missile (JASSM)

joint airborne operation

joint all sources information center (JASIC)

joint amphibious operation (JAO)

Joint Analysis Team (JAT)

joint and multinational fires

joint and service control measures

Joint Architecture for Unmanned Systems (JAUS)

joint armed forces (JAF)

Joint Artificial Intelligence Center (the) (JAIC, pronounced 'jake')

joint C3 and support center (JC3SC)

joint cap

Joint Capabilities Integration and Development System (JCIDS)

Joint Capability Area (JCA)

Joint Center for Control and Coordination (JCCC)

Joint Centre for Control and Coordination on ceasefire and stabilization of the demarcation line (JCCC)

Joint Chiefs of Staff (JCS)

joint civil and military aerodrome

joint collection assets

joint command

Joint Committee on Intelligence Activities

Joint Committee on Proliferation (JCP)

joint communication

joint communications control center (JCCC)

Joint Concept for Access and Maneuver in the Global Commons (JAM-GC)

Joint Consultative Group (JCG)

joint control

joint coordination board (JCB)

joint coordination board working group (JCBWG)

joint defense

joint dictionary

joint direct attack munition (JDAM)

joint doctrine

joint effort

joint electronic library (JEL)

joint exercise

joint fare

Joint Fire Support

joint fires

joint fires observer (JFO)

joint force air component commander (JFACC)

Joint Force Commander (JFC)

joint force engineer center (JFEC)

joint force (JF)

joint force land component commander (JFLCC)

Joint Forces Operation (JFO)

Joint Forces Staff College

Joint Headquarters (JHQ)

Joint Helmet-Mounted Cueing System (JHMCS)

Joint Implementation Arrangement (JIA)

Joint Information and Analysis Centre (JIAC)

joint information center (JIC)

Joint Information Operations Center /Joint Intelligence Operations Center (JIOC)

joint intelligence

Joint Intelligence Committee

Joint, Interagency, Intergovernmental, and Multinational (JIIM)

Joint Interface Control Officer (JICO)