My Lords, the proposals put forward have been taken very seriously indeed. We have under active consideration the possibility of UK legislation being extended from the present maximum of two years' imprisonment for endangering the safety of an aircraft to five years, which would make such behaviour an arrestable offence. Some other forms of dangerous activity are also under consideration. Noble Lords may remember that we announced in the Queen's Speech that a draft safety Bill would be produced which would provide the opportunity of including the kind of legislative change suggested by the noble Lord.