Smoke grenade

Smoke-producing flares are used for a variety and diversity of reasons by the UNSC. Different reasons appear to have different colors of smoke attached to them.
*Signal Flare: "Smokers" are used to alert allies of a friendly position. They utilize thick, green or white smoke.
*Smoke Canister: These are used to signal for pickup after a mission, or a request for an equipment drop, or even a need for emergency evacuation. They create thick, blue or red smoke. These are also referred to as "smoke" grenades.
==In-game Apperances==
*In the level Winter Contingency, a Signal Flare is thrown at a group of Covenant by Jorge-052.
*In the cutscene following the level Exodus, Noble Six used a Smoke Canister to signal for evacuation.
*After the Halo: Reach level New Alexandria, Noble Team uses a Smoke Canister to signal for evacuation from the Olympic Tower.
==List of appearances==
*Halo 3
*Halo Wars
*Halo: Reach
Category:Grenades
Category:Human
Category:Human Weapons
Category:UNSC
Category:Halo 3
Category:Halo Wars
Category:Halo: Reach