If you put the right camera on a drone, it can spot cracks in a rooftop or nitrogen levels in crops, among other versatile and positive uses. If you're up to no good, though, the same drone could cause plenty of problems for public- and private-sector critical infrastructure operators. This week, we chat with Dr. Art Wolfskill, professor and head of the agribusiness program at Sam Houston State, about the benefits and risks of highly mobile unmanned aircraft.