However tragic the death of this man's family is, this is a ludicrously low sentence for such a crime. If Swizerland is anything like the UK, he will no doubt with 'good behaviour' be out in 4 years. What is most disturbing here is the acceptance that somehow this could be a reasonable response to the controller's death. It is bringing into Western Europe concepts of 'vendetta' and mafia-type values which should be challenged at every turn. This guy knowinly decided to kill an Air Traffic Controller for a professional error. Such an act is the worst sort of pre-meditated criminality and should have resulted in a life sentence. The Swiss have seriously failed their own citizens in this and opened the door to every type of revenge killing on a whim.