Not to mention the fact that you'd have to hit a small target (a face) and hold it there for at least a few seconds, while the airplane was moving anywhere from 160 mph on takeoff or final approach, to 500+ mph at cruise altitudes of 33,000 feet or more.
I'm not saying it couldn't happen, it's just an awful odd thing to hear about. It almost sounds more accident than intentional, though I can't fathom how either could occur.
}:-)4
It would require some kind of device to track the plane. The type of tracker they use on helicopter TV cameras could do it. They can hold the camera rock-steady while showing a X100 magnification of a scene about 5 miles away.