maintenance of smoke curtain

smoke curtain/ screen

smoke curtain

curtain of fire

gas curtain

curtain a crossing

curtain fire

fire curtain

curtain

destructive curtain

smoke grenade (smoke canister)

contingency maintenance / special maintenance

depot maintenance (beyond O and I level activities, performed in an industrial-type facility) / D-level maintenance

maintenance checks / routine maintenance, scheduled tasks

maintenance idling (periodic running of engine for maintenance purposes)

organizational maintenance (O-level) (day-to-day work that standard airfield maintenance groups perform in support of airfield operations)

routine maintenance / scheduled tasks, maintenance checks

scheduled tasks / routine maintenance, maintenance checks

special maintenance / contingency maintenance

black obscurant smoke

cold smoke

colored obscurant smoke

laser protection smoke

lay a smoke screen

signaling smoke

smoke generator

smoke grenade discharger

smoke missions

smoke mixture

smoke point (fuel)

smoke screen (smokescreen )

thermal effects protective smoke screen

thermo smoke equipment