Bob,
I think it marvellously funny when you tell us;
New York City clear across to Los Angeles my country is populated with dozens and dozens of Police Helicopter Operations and almost all use Single Engined Helicopters exclusively for Day and Night flying.
When the first location you mention doesn't actually have any singles.
I just love your answer to the question, 'Why do the New York Police only operate twins';
How in the Hell would I know Sid?
What does it matter?
It matters Bob, because you seem to know why singles are so much better than twins, you are arguing that twins in police operations aren't necessary etc ... however your own New York Police Department seems to disagree with everything you say. Perhaps you'd better pay them a visit and tell them where they are going wrong