If we're not participating in a jet-powered water cannon arms race yet, we need to get going. Because once you watch China's $US456,000 monster shoots four tons of water per minute, you're going to want one of our own.
That contraption - meant to suppress office fires - has a range of nearly 120m and expels water fast enough to not just douse flames but choke the oxygen out of them. Come on, scientists of America. Surely we can strap a jet onto something even cooler than this. Right? [Phoenix News Media via Engadget]