free-fire area

зона ведення вогню без обмежень (дозволено застосування важкого озброєння без узгодження з вищим командуванням)

accident-free flying / mishap-free flying

mishap-free flying / accident-free flying

toxic free area

slant fire; diagonal fire; oblique fire; fire to the oblique

fire exposed envelope; fire hazard area

fire control orders (FCO) ('Hold Fire', 'Cease Fire' and 'Engage')

area of war/war area

potential danger area (trouble area)

hazard area / hazardous area

killing area / kill area

open area danger area

contact-free war

contamination-free

free fall air drop

free naval control of shipping

nuclear-free zone

weapons free zone (WFZ)

anti-aircraft free-flight rocket

free flight rocket

free-flight aerial rocket

free-flight phase