environment protection system

contemporary operational environment / contemporary operating environment (COE)

system of system common operating environment

environment control system noise

flight environment data system

clutter environment target discrimination system

NBC protection system

nuclear-chemical-biological protection system

Tactical Hearing Protection System (THPS)

Department for Protection of the Constitutional System and the Fight against Terrorism

fire-protection system

zinc anode cathodic protection system

fire protection system

ice protection system

airfoil and cowl ice protection system

Fly-Away Protection System

active protection system (APS)

stall protection system

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