Forgive me for asking what may, to some, seem a dumb question. When I travel on a regular London bus, from Oxford Street to Notting Hill, there are (according to my count) as many as 16 CCTV cameras covering the various areas inside a double decker bus. I feel very safe and secure knowing this. Yet, aircraft that cost 1000 times more (I'm guessing wildly, but you know what I mean) do not have this. All the times I see reports in the press of a "passenger from hell" commotion on board an aircraft, we are reduced to viewing images captured from the cellphones of passengers who happen to witness the event. Surely if every bus in London can have such tech (which is not so expensive), then a multi-million dollar aircraft should have no issues installing the same?