Fire extinguisher refilling machine.
Fullsize image: https://diqn32j8nouaz.cloudfront.net...r_fullsize.jpg
Previously:
Fire hydrant cutaway - photo
Fire retardant drop crushes truck - GIF
Firefighting foam aerator - GIF
Drone puts out a building fire - GIF
Automatic gas station fire extinguishers - video
Extinguishing a fire with a bottle of Coke - GIF
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