This would be a grenade filled with a fire extenguishing solution. There is a major risk of injury or death from smoke inhalation, structural collapse, or burns that is inherent when you’re standing 5 feet from a fire with a conventional extenguisher. This grenade would allow you to leave the room entirely to a position where you only have to aim for the doorway to extenguish the flames in that room. If it’s an electrical fire, you no longer have to worry about the current following a water stream back to your hand. Arm your brigade with extengishing grenades and have them lob away through the front door or a collapsed roof.
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