working substance

combustible substance

flammable substance

illicit substance (counter-narcotics)

substance abuse

inflammable substance

ozone depleting substance

non-toxic harmful substance

substance

biological active substance

explosive substance

hazardous substance

highly toxic substance

liquid state of substance

low global warming potencial substance

nitrogen-containing substance

priority substance

pyrotechnic substance

soluble substance

toxic substance

radioactive substance

chemically hazardous substance

ad hoc working group

Ad Hoc Working Group on Small Arms and Light Weapons and Mine Action (NATO)

Army Fuels and Lubricants Working Party (ARMY F&LWP)

Depot Maintenance Actions Working Group (DMAWG)

Information Operations Working Group (IOWG)

interface control working group (ICWG)

joint coordination board working group (JCBWG)

Logistics Information Management Working Group (LOG IM WG)

Military Committee Working Group (NATO)

military working dog (MWD)

operating stocks; working stock