He's a cnn aviation analyst and aviation attorney. i guess, justin they're probably the question a lot of people have this morning as they hear about this story is how is it possible somebody could just walk into a plane, get it started and then fly off? even someone with ground security clearance? i know this may sound like a silly question, but to planes have keys? do you need some sort of mechanism to get the thing started? how is this possible? >> you know, these airplanes, if i go out to an airport, a cessna, a key, whatever you need to get the airplane and start the airplane. but these a...