operational zone

zone of immediate operational concern

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)

combat operational stress control (COSC)

combat operational stress control service

common operational picture (COP)

contemporary operational environment / contemporary operating environment (COE)

contiguous operational area

counter IED operational / strategic level

full operational capability (FOC)

get fully operational

guidelines for operational planning (GOP)

immediate operational readiness

initial operational capability (IOC)

interim operational capability (IOC)

Joint Urgent Operational Need (JUON)

maritime operational logistic support

measures of operational effectiveness (MoOEs)

noncontiguous operational area

operational

operational activities

operational agency

operational aircraft

operational altitude

operational analysis (OA)

operational and tactical calculations