VERTREP operating area (VOA)

vertical replenishment (VERTREP)

VERTREP pick-up and delivery zone

missile operating area

area of war/war area

potential danger area (trouble area)

hazard area / hazardous area

killing area / kill area

open area danger area

battlefield operating system (BOS)

buffer and operating-rod group

common operating environment (COE)

contemporary operational environment / contemporary operating environment (COE)

deployment operating base

emergency fleet operating base

forward operating base (FOB)

ground operating equipment

naval base; naval operating base

naval operating base (fixed or temporary)

operating environment (OE)

operating forces

operating forces of the Navy

operating frequency

operating mechanism

operating principle

operating procedures

operating rod assembly

operating rod group

operating speed

operating stocks; working stock

operating tempo (OPTEMPO)

standard operating procedure(s) (SOP)

standing operating procedure (SOP)