quote [ A US general says an American ally shot down a small quadcopter drone with a Patriot missile.

Recently, there have been reports that some groups, for example in Iraq, have taken to attaching weapons to small, commercial drones and using them against security forces.

"I'm not sure that's a good economic exchange ratio," he told an audience at the Association of the United States Army's Global Force symposium in Alabama.

"In fact, if I'm the enemy, I'm thinking, 'Hey, I'm just gonna get on eBay and buy as many of these $300 quadcopters as I can and expend all the Patriot missiles out there'." ]