You think things are scary now with drone aircraft, give it a few years: You may find yourself being plucked from the ground and carried aloft, or abruptly instructed by loudspeaker to shake hands with The Man, hovering silently, just overhead.
Engineers at Drexel University have a grant from the National Science Foundation to see if "dexterous limbs" can be successfully added to drones.
The "Mobile Manipulating UAVs" (Unmanned Aerial Vehicles) as they are being called, once developed, would be capable of performing "active near ground tasks."