Smoke grenade

Smoke-producing flares are used for a variety of reasons by the UNSC. Different reasons appear to have different colors of smoke attached to them. There are a variety of smoke producing items, none of which has yet been seen in any Halo video game.


 * Signal Flare: "Smokers" are used to alert allies of a friendly's position. They utilize thick, green smoke.


 * Smoke Canister: These are used to signal for pickup after a mission. They create thick, blue smoke. These are also referred to as "smoke grenades."