Remember that kid who attached a flame throwing to his drone and got in trouble for it? He should have patented the idea:

http://www.popularmechanics.com/flig...rowing-drones/

"Incredible new pictures show that a power company in Xiangyang, China has a creative solution to the problem of garbage hanging on power lines: flame-throwing drones. The drones are deployed to fly up alongside hard-to-reach stretches of wire and burn off garbage like plastic bags with giant plumes of flame."