Remember this guy?
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Johnny Dronehunter shoots drones out of the sky in style and silence, using a special suppressor-equipped shotgun. But as it turns out, you needn't pump hot lead into the sky to bring a quadrotor down; at a music festival in Canada, someone figured out a simple confetti gun is equally effective.
Of course there is a range issue with a confetti cannon, but at least there's no waiting list and background checks.