impact zone

ballistic impact point (BIP) / ground (predicted) impact point (PIP)

grid zone / grid-zone

zone standard time (zone time) (ZST)

killing zone / kill zone

grid zone designation / Grid Zone Designator

grey-zone / grey zone (international relations)

hundred-per-cent zone (one-hundred-per-cent zone)

no-fire zone / no fire zone

flight restriction zone / flight restricted zone (FRZ)

acoustic impact

angle of impact

blunt impact ammunition

impact error

impact fuze

impact-sensitive chemical

mean point of impact (MPI)

multiple rounds simultaneous impact (MRSI)

point of impact (POI)

psychological impact / shock

quick-impact projects

environmental impact

Environmental Impact Assessment (EIA)

impact free

impact survey

round 1 impact

impact distribution pattern

significant impact / influence

designed point of impact

ditching impact

apparent center of impact

back impact

impact power