Institute for the Study of War (ISW)

military institute

Royal United Services Institute for defense and Security Studies (RUSI)

United States Naval Institute (USNI)

Stockholm International Peace Research Institute (SIPRI) (швед. Stockholms internationella fredsforskningsinstitut)

U.S. Naval Institute

Institute of Cadre Management Suzhou

International Aviation Management Training Institute

institute an award

European Telecommunications Standards Institute (ETSI)

area of war/war area

conduct a war / fight a war

tug-of-war (Tug of War / TW)

drone war (world’s first drone war)

exercise study

field study

leadership exercise study

long term study

staff study

feasibility study (FS)

preliminary study

foreign area and language study

aircraft refuel and rearm study

hind-sight analysis / study

accident data reporting study group

safety oversight study group

aerodrome meteorological observing systems study group

aeronautical data modeling study group

aeronautical information and charts study group

aircraft classification number study group (ACNSG)

aircraft noise and design effects study (ANDES)

aircraft noise design effects study

aircraft type designation study group