i've never heard of it, but i'm an indoor guy so i dunno. it seems like they'd be a lot busier concentrating on flying than trying to identify different types of plants in a corn field though. unless you have a forest going on... good luck.
Never heard of it happening, though the news usually doesn't name the narc.
It really depends on the pilot, whether or not he gets his nuts off from seeing other people get fucked. But if he did he'd probably be a cop, not a pilot.
Unless you're growing fields I wouldn't sweat it. If you are...have him dust it?