> those giant swinging carbon fiber blades before they encounter human flesh Rotor guards exist. They reduce efficiency, but if this is a major concern, it can

> those giant swinging carbon fiber blades before they encounter human flesh Rotor guards exist. They reduce efficiency, but if this is a major concern, it can be done. Not much can be done today about the noise, short of not using drones and switching to helicopters, with larger, but slower moving blades (more difficult to guard them too).