Anyone who got a drone for Christmas and plans to fly it outdoors should be prepared to do some research first - or break Federal Aviation Administration rules. Owners may register through a Web-based system at www.faa.gov/uas/registration. The $5 registration fee will be refunded if registration is made before January 20. The unmanned aircraft perform many tasks that can be hazardous for humans: police surveillance, forest fire observation, and toxic hazard assessment, to name a few according to article at SCCougar.com.