FORT COLLINS, CO, USA, December 13, 2014: Radio controlled DJI F550 Flame Wheel hexacopter drone with propeller guards. This drone is assembled fr Stock Photo - Alamy
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FORT COLLINS, CO, USA, December 12, 2014: A detail of the DJI F550 Flame Wheel hexacopter drone with propeller guards on a white background. Thi Stock Photo - Alamy