Fire extinguisher

Fire extinguishers, or extinguishers, are an active fire protection device used to extinguish or control small fires, though they are ineffective for out-of-control fires. Typically, fire extinguishers are composed of a hand-held cylindrical pressure vessel containing an agent (such as nitrogen or carbon dioxide) that can be used to extinguish a fire.

Because of safety regulations, public areas or military bases are required to have at least one fire extinguisher on hand in the event of a fire.

Although technically not a fire extinguisher, the FOXHOUND agent Raiden made use of the Coolant spray in a similar manner to a fire extinguisher when escorting Emma Emmerich to the Core 1 server room to extinguish some fires caused by the fighting on the Big Shell.

Behind the scenes
Fire extinguishers first appeared in Metal Gear Solid 2: Sons of Liberty and appeared in other games in the Metal Gear series, where they acted as a non-lethal trap by shooting the fire extinguishers to let off an explosion of smoke to deter any pursuers.

Although fire extinguishers themselves cannot be used as an accessible item, Metal Gear Solid 2 did have the Coolant spray, which served a similar purpose late in the game.