Controlled either by remote or through a pre-programmed flight path, the Maverick drone offers operators a birds-eye view of the ground below, and can launch from just about anywhere.Makers of these drones, said to be specialised for civilian use, are saying buyers from across the spectrum are lining up for training sessions.But for human rights activists, it is the lack of regulations that are a cause for concern.Al Jazeera's Andy Gallacher reports from Gainesville in Florida.