A Patriot missile - usually priced at about $3m was used to shoot down a small quadcopter drone, according to a US general.
General David Perkins, Commander of the US Army Training and Doctrine Command told a military symposium "a very close ally" used the surface-to-air missile to bring down the drone.
"That Quadcopter that cost $200 from Amazon.com did not stand a chance against the Patriot. On the kinetic exchange ratio, the Patriot won," he said, adding that: "I'm not sure that's a good economic exchange ratio."
No further details of the encounter - such as where or how recently it took place - were given, but Gen Perkins did describe the party that launched the missile as "a very close ally".
