Spy or chemical detector? What about nanoscopic WMD's?

Talk about a surveillance society. Not only surveillance blimps in the sky near and not so near the southern border. Not only cameras to record (and mis-record) a vehicle license plate for a traffic infraction. Not only camera's increasingly recording when one scratches or blows one's nose in public ...

Now we literally have a Fly-On-The-Wall robot.

Robotic Insect Takes Off for the First Time --Researchers at Harvard have created a robotic fly that could one day be used for covert surveillance and detecting toxic chemicals.