Re: @ Sir Sham Cad
You guys all seem to be forgetting that its not as simple maths as that. I earn X from my company per hour for doing the work, but my time is sold to the customer at 3X minimum, because you have to include backroom staff and equipment, the front line equipment (in this case, the fully stocked cop car for the plod to sit around in, the gun, night stick, radios, dashboard computer, etc.), and a host of other overheads.
I would imagine that the 3million figure comes from how much the forces that have been deployed for this could have earned if they were deployed for the same amount of time protecting a football game or the like.
So going by the base figure for salaries is just being silly...