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A bucket brigade or human chain is a method for transporting items where items are passed from one (relatively stationary) person to the next. The method was important in firefighting before the advent of hand-pumped fire engines, whereby firefighters would pass buckets to each other to extinguish a blaze. A famous example of this is the Union Fire Company. This technique is still common where using machines to move water, supplies, or other items would be impractical. This method needs a number of participants sufficient for covering the distance.