Slightly off topic, but many posters on this thread have questioned the use of police helicopters to catch speeding motorists.
My neighbour's daughter was killed by a speeding motorist, so perhaps I'm biased.
But speeding motorists kill more law-abiding citizens than all the muggers, rapists and dope peddlers in christendom - about ten a day on average in Britain.
If you want to know who the real killers are, you don't have to look far.
There can be no better use of police resources than nailing these bastards.