http://ardrone2.parrot.com/ , this is their official website. Can purchase from here. You can control the airborne drone using ipad/iphone. The flight can be recorded using 720p camera mounted on the drone itself.
They even had GPS that can be attached to the drone. You can set the GPS path and the drone will follow it. Useful for patrolling factory, farm or even rubber estate Fire brigade can use is to do surveillance or fact finding on a building during their rescue mission.