My Lords, is the Minister aware of another relatively recent case where a stewardess was stabbed in the back by a man who had been drinking vodka on board the aircraft and who subsequently broke the bottle and used it as an offensive weapon? Where it is known that a person has been drinking before boarding the aircraft, does not the noble Lord think that there is a strong case for the introduction of measures to allow the passenger to be searched and for any alcohol found on him to be removed before he boards?