There as well over 1 million drones currently in the US. I get that number by adding up sales figures or estimates of the bigger manufacturers. (Parrot, DJI, 3DR etc..) There could certainly be well more then that (and most likely are) as that's not including hobbyist DIY drones. I've yet to find more then a handful of references to deaths by drones over the past few years and even then those were caused by Single Rotor RC helicopters or RC planes (if you want to lump those in as "drones")