non-permissive environment

permissive environment

contemporary operational environment / contemporary operating environment (COE)

permissive instructions

permissive issue

permissive link

permissive retention

non-line of sight environment

non-interference; non-intervention

non-mandated non-governmental organization

non-directional beacon (NDB) / non directional beacon

air defense ground environment

Allied Joint Doctrine for Recovery of Personnel in a Hostile Environment (AJP-3.7)

battlefield environment

chemical environment

common operating environment (COE)

contaminated environment

ECM environment

Environment and Security Initiative (ENVSEC) UN-OSCE-NATO initiative

favorable environment

field environment

Future Airborne Capability Environment (FACE)

hostile environment

information environment

land environment

launch environment

launching environment

low-threat environment

military environment

multiple unified simulation environment (MUSE)

NBC environment

operating environment (OE)

physical environment